Artificer, Gunslinger Variant (5e Class)

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A version of the Artificer class focused on the Thunder Cannon and magical items.


A gnome sits hunched over a workbench, carefully using needle and thread to wave runes into a leather satchel. The bag shudders as she completes her work, and a sudden, loud pop echoes through the room as a portal to an extradimensional space springs to being in the bag’s interior. She beams with pride at her newly crafted bag of holding.

A troll growls in hunger as it looms over a dwarf, who slides a long, metal tube from a holster at his belt. With a thunderous roar, a gout of flame erupts from the tube, and the troll’s growls turn into shrieks of panic as it turns to flee.

An elf scrambles up the castle’s wall, Baron von Hendriks’ men close behind her. As she clambers over the battlements, she reaches into her satchel, pulls out three vials, mixes their contents into a small leather bag, and flings it at her pursuers. The bag bursts at their feet, trapping them in a thick, black glue as she makes her escape.

Makers of magic-infused objects, artificers are defined by their inventive nature. Like wizards, they see magic as a complex system waiting to be decoded and controlled through a combination of thorough study and investigation. Artificers, though, focus on creating marvelous new magical objects. Spells are often too ephemeral and temporary for their tastes. Instead, they seek to craft durable, useful items.

Cunning Inventors[edit]

Every artificer is defined by a specific craft. Artificers see mastering the basic methods of a craft as the first step to true progress, the invention of new methods and approaches. Some artificers are gunsmiths, students of invention and warfare who craft deadly firearms that they can augment with magic. Other artificers are alchemists. Using their knowledge of magic and various exotic ingredients, they create potions and draughts to aid them on their adventures. Others still are mechanists crafting clockwork servants who carry out their needs. Alchemy, mechanics, and gunsmithing are the three most common areas of study for artificers, but others do exist.

All artificers are united by their curiosity and inventive nature. To an artificer, magic is an evolving art with a leading edge of discovery and mastery that pushes further ahead with each passing year. Artificers value novelty and discovery. This penchant pushes them to seek a life of adventure. A hidden ruin might hold a forgotten magic item or a beautifully crafted mirror perfect for magical enhancement. Artificers win respect and renown among their kind by uncovering new lore or inventing new methods of creation.

Intense Rivalries[edit]

The artificers’ drive to invent and expand their knowledge creates an intense drive to uncover new magic discoveries. An artificer who hears news of a newly discovered magic item must act fast to get it before any rivals do. Good-aligned artificers recover items on adventures or offer gold or wondrous items to those who possess items they are keen to own. Evil ones have no problem committing crimes to claim what they want.

Almost every artificer has at least one rival, someone whom they seek to outdo at every turn. By the same token, artificers with similar philosophies and theories band together into loose guilds. They share their discoveries and work together to verify their theories and keep ahead of their rivals.

Creating an Artificer[edit]

When creating an artificer character, think about your character’s background and drive for adventure. Does the character have a rival? What is the character’s relationship with the artisan or artificer who taught the basics of the craft? Talk to your DM about the role played by artificers in the campaign, and what sort of organizations and NPCs you might have ties to.

Quick Build

You can make an artificer quickly by following these suggestions. First, put your highest ability score in Intelligence, followed by Constitution or Dexterity. Second, choose the sharp shooter background.

Class Features

As a Artificer you gain the following class features.

Hit Points

Hit Dice: 1d6 per Artificer level
Hit Points at 1st Level: 6 + Constitution modifier
Hit Points at Higher Levels: 1d6 (or 4) + Constitution modifier per Artificer level after 1st


Armor: light, medium
Weapons: simple,martial weapons
Tools: three tool proficiencies of your choice
Saving Throws: Constitution, Intelligence
Skills: Choose three from Arcana, Deception, History, Investigation, Medicine, Nature, Religion, Sleight of Hand


You start with the following equipment, in addition to the equipment granted by your background:

  • (a) a handaxe and a light hammer or (b) any two simple weapons
  • a light crossbow and 20 bolts
  • (a) scale mail or (b) studded leather armor
  • one set of tools (your choice) and a dungeoneer’s pack

Table: The Artificer

Level Proficiency
1st +2 Portable Forge, Magic Item Analysis
2nd +2 Gunsmithing
3rd +2 Tool Expertise, Wondrous Invention
4th +2 Ability Score Improvement
5th +3 Gunsmith Feature, Magical Infusion
6th +3 Masterpiece Creation, Wondrous Invention
7th +3 Gunsmith feature, Superior Attunement
8th +3 Ability Score Improvement
9th +4
10th +4 Gunsmith Feature
11th +4 Wondrous Invention
12th +4 Ability Score Improvement
13th +5
14th +5 Gunsmith Feature
15th +5 Wondrous Invention, Superior Attunement
16th +5 Ability Score Improvement
17th +6
18th +6 Gunsmith Feature
19th +6 Ability Score Improvement
20th +6 Soul of Artifice, Wondrous Invention

Portable Forge[edit]

Part of the reason that you have become an artificer is because you are a prodigy with craft; you've learned how to construct items on-the-go. At 1st level, you can craft non-magical items twice as quickly, and can use rests during adventuring time to make progress in crafting an item. To craft an item while adventuring, you can spend a short rest working on the item. You will not benefit from a short rest (using Hit Dice, etc) if you use this feature. During an adventure, two short rests spent using this feature count as one day of downtime. Therefore, a nonmagical item that costs 100 gp can be completed in one workweek, or ten short rests, rather than 2 workweeks of downtime.

Other individuals can't help you if you attempt to craft an item using this feature. This feature assumes the adoption of the rules specified in the section Crafting an Item in XGtE (p.128). However, your DM may have different rules for crafting non-magical items in your campaign. Discuss crafting for your game with your DM to amend this feature as appropriate to your campaign.

This Forge also lets you access your infusions letting you add them to items or armour as shown on the Base artificer table.

Magical Crafting[edit]

Your inventive knowledge allows you to create magic items more quickly. Starting at 4th level, you can now craft magical items using the portable forge feature. Only wondrous items may be crafted in this way, and you must still provide the appropriate formula and requisite materials to craft the item. The rules for crafting magic items is included in XGtE (pp.128-129), or the DMG (pp. 128-129). Your artificer level determines the rarity of an item you are able to craft. Refer to the Magic Item Ingredients table in XGtE (p. 129) to determine whether you are able to craft a magical item.

Magic Item Analysis[edit]

Starting at 1st level, your understanding of magic items allows you to analyze and understand their secrets. Your understanding of magic allows you to cast detect magic and identify, and you can cast them as rituals. You don’t need to provide a material component when casting identify with this class feature. When you perform an identify ritual with a magical item equal to or less than your level of crafting, you may also attempt to glean the formula included in the making of the item. Upon finishing the identify ritual, make an Arcana check; the DC for a common magical item is 15, and the DC increases by 2 for every increase in rarity.

On a success, you learn the formula (including components and spells) required for crafting that sort of item. If the check fails, you may make another attempt at understanding the item after a long rest, and the DC decreases by two.

Tool Expertise[edit]

Starting at 3rd level, choose two of your tool proficiencies. Your proficiency bonus is doubled for any ability check you make that uses either of the chosen proficiencies. In addition, when you make a check with any tool with which you have proficiency, you may use your Intelligence modifier in place of another ability.

Wondrous Invention[edit]

At 3rd level, you gain the use of a magic item that you have crafted. Crafting an item is a difficult task. Whenever you gain a magic item from this feature, it reflects long hours of study, tinkering, and experimentation that allowed you to complete an item of your own unique design. You complete another item of your choice when you reach certain levels in this class: 3rd, 5th, 11th, 15th, 19th, and 20th level. The item you choose must be on the list for your current artificer level or a lower level.

These magic items are detailed in the Dungeon Master’s Guide.

3rd Level: bag of holding, cap of water breathing, driftglobe, goggles of night, sending stones

5th Level: alchemy jug, helm of comprehending languages, lantern of revealing, ring of swimming, robe of useful items, rope of climbing, wand of magic detection, wand of secrets

11th Level: bag of beans, chime of opening, decanter of endless water, eyes of minute seeing, folding boat, Heward’s handy haversack

15th Level: boots of striding and springing, bracers of archery, brooch of shielding, broom of flying, hat of disguise, slippers of spider climbing, antimatter rifle

20th Level: eyes of the eagle, gem of brightness, gloves of missile snaring, gloves of swimming and climbing, ring of jumping, ring of mind shielding, wings of flying, rob of the archmagi

Also at 20th level you may create the ultimate magic item The Gauntlet Of Siphoning.This item lets you choose a fallen creature that hasn't been dead for more than 10 minutes. To siphon off the creatures abilities you must complete a 2 minute ritual and after it has been completed you may choose one of the following actions to use.

  • Siphon one of its abilities or features that it was able to use.
  • Siphon it's essence giving you permanently 10 hit points and extending your life by 10 years.
  • Siphon it's knowledge if it was able to cast spells you gain the ability to cast one of the spells it was able to cast.

Inventive Expertise[edit]

At 10th level, you have developed expertise with your wondrous inventions. During a short rest, you can prepare one of your wondrous inventions to use again.

Infuse Magic[edit]

Starting at 4th level, you gain the ability to channel your artificer spells into objects for later use. When you cast an artificer spell with a casting time of 1 action, 1 bonus action, or 1 reaction, you can increase its casting time to 1 minute. If you do so and hold a nonmagical item throughout the casting, you expend a spell slot, but none of the spell’s effects occur. Instead, the spell transfers into that item for later use if the item doesn’t already contain a spell from this feature.

At 5th level you also gain the ability to change the magical damage on items and weapons to a different type.If the weapon doesn't already have a magical type of damage you may add one dealing Xd8 of the chosen type X Being equal to your intelligence modifier.

Any creature holding the item thereafter can use the casting time of the original spell (1 action, 1 bonus action, or 1 reaction) to activate the spell if the creature has an Intelligence score of at least 6. The spell is cast using your spellcasting ability, targeting the creature that activates the item. If the spell targets more than one creature, the creature that activates the item selects the additional targets. If the spell has an area of effect, it is centered on the item. If the spell’s range is self, it targets the creature that activates the item. If the spell requires concentration, the creature that activates the item maintains the concentration as if they had cast the spell.

When you infuse a spell in this way, it must be used within 8 hours. After that time, its magic fades and is wasted.

You can have a limited number of infused spells at the same time. The number equals your Intelligence modifier.

Ability Score Improvement[edit]

When you reach 4th, 8th, 12th, 16th, and 19th level, you can increase one ability score of your choice by 2, or you can increase two ability scores of your choice by 1. As normal, you can’t increase an ability score above 20 using this feature.

Masterpiece Creation[edit]

At 6th level, your research and dedication to your craft allow you to produce a true masterpiece which will be talked about for years to come. This creation is assumed to have been worked on for many months or possibly even years; the culmination of your first major project. You may choose one of the below options for your Masterpiece Creation.

Mechanical Servant[edit]

Select a type of creature to replicate by mechanical means with a challenge rating of 5 or less using the monster creation rules in the DMG. The servant uses that creature's game statistics.It has the following modifications:

  • It is a construct instead of the chosen creature.
  • It can't be charmed.
  • It is immune to poison damage and the poisoned condition
  • It gains darkvision with a range of 60 feet if it doesn't have it already.
  • It understands the languages you can speak when you create it, but it can't speak.
  • It loses any skill proficiencies it has.
  • It gains proficiency in all saving throws.
  • It replaces its proficiency bonus with yours.
  • Its AC is equal to Special Plating, which has a value of 15 + its proficiency bonus (does not benefit from dexterity or barding).
  • Gains the "Protection" fighting Style as listed in the Fighter class features.

The servant obeys your orders to the best of its ability. In combat, it acts on your initiative, and you determine its actions and decisions. If you are incapacitated or absent, your servant acts on its own.

For each Artificer level you gain after 6th, your construct gains an additional hit die and increases its hit points accordingly

Each time you take a long rest, you can repair your construct to full. Other than that, it does not regenerate hitpoints naturally.

At 11th level, the construct gains the effects of the "Sentinel" Feat.

At 20th level you can now replicate any creature you desire with a challenge rating of 25 or less.

If the servant is killed, it can be returned to life via normal means, such as with the revivify spell. In addition, over the course of a long rest, you can repair a slain servant if you have access to its body. It returns to life with 1 hit point at the end of the rest. If the servant is beyond recovery, you can build a new one with one week of work (8 hours each day) and 1,000 gp of raw materials.

Sentient Item[edit]

Your mastery of your craft allows you to grant sentience to items and other things that usually have no mind.

Pick a weapon, shield or ring you possess and grant it sentience. It has the following properties:

  • It has the same alignment you have
  • It has telepathy up to a range of 60 ft
  • It has blindsight up to a range of 60 ft
  • If it is a shield you are proficient with that shield while it is sentient

While wielding (or in the case of the ring wearing) the item you gain the following benefits:

  • You have advantage on saving throws against being charmed or frightened
  • You are resistant to psychic damage
  • You can telepathically communicate with creatures you can see within 3

60 ft of you

The sentient item has three ability scores a 16, 14 and 12 allocated by you into inteligence, wisdom and charisma. Depending on what ability score has a 16 it offers a different benefit.

If it has a 16 in intelligence you may add its intelligence modifier to any ability check you make that uses intelligence while wielding (or in the case of the ring wearing) the item.

If it has a 16 in wisdom you may add its wisdom modifier to your passive perception while wielding (or in the case of the ring wearing) the item.

If it has a 16 in charisma you may add half its charisma modifier (rounded down) to any ability check you make that uses charisma while wielding (or in the case of the ring wearing) the item.

Whenever you gain the ability score improvement feature you may increase one of the items ability scores by 2 or two of its ability scores by 1. As normal, you can't increase an ability score above 20 using this feature. If this makes any of the ability scores 16 or higher that weren't previously you gain the benefits of that ability score (listed above).

If your Sentient Item is ever lost or destroyed you may resummon it upon completing a long rest. If it is not destroyed the previous version of it is destroyed instantly when you do this.

When you resummon your Sentient Item you may keep it in its original item or put it into a new item you possess.

Versatile Substance[edit]

Your mastery of your craft has allowed you to make a substance so versatile it can shift form on a whim. How you use that power is up to you.

You gain a small orb of metal which can fit in one hand. As an action you may turn the orb into another object.

The objects you can turn it into you must be able to see or are familiar with. You can turn it into a non magical object no bigger than 40 by 40 ft that has a value of no more than 2,000gp.

Additionally, when you turn this into a weapon which is considered magical for the sake of overcoming immunities. You may still use Arcane Infusion with this weapon.

Additionally, as an action you may touch your Versatile Substance and make it enter your body. It becomes undetectable by non magical means.

You may draw it out of you again as an action. In that action you may also turn it into another object following the original rules.

If your Versatile Substance is lost or destroyed you may make a new one with one week of work (eight hours each day) and 2,000 gp of raw materials.

Superior Attunement[edit]

At 6th level, your superior understanding of magic items allows you to master their use. You can now attune to up to four, rather than three, magic items at a time. Additionally, you may attune to an item that does not normally require attunement, such as a mundane weapon, piece of armor or item no larger than a 10ft cube. Any item attuned to in this way can be summoned into a space adjacent to you using an action. You may only use this ability once per short rest.

At 14th level, this limit increases to six magic items. Additionally, you ignore all class and race restrictions for the use of magical items.

Soul of Artifice[edit]

At 20th level, your understanding of magic items is unmatched, allowing you to mingle your soul with items linked to you. You can attune to up to six magic items at once. In addition, you gain a +2 bonus to all saving throws per magic item you are currently attuned to. (You do not receive this bonus if the item you are attuned to does not normally require attunement.) In addition, your intelligence score and your maximum for that score both increase by 4.

Artificer Specialization[edit]

Artificers pursue a variety of specializations. The two most common (if any artificer can be described as common) are alchemists and gunsmiths. Your choice grants you features at 2nd level and again at 5th, 7th, 10th, 14th, and 18th.

Specialization Augments[edit]

Through your esoteric studies, you have learned to further your specialization with artificial augments. Each specialization includes a description of how its augments function. You gain a new Augment at 4th, 6th, 8th, 10th, 13th, 16th, 18th and 20th levels, as shown by the Augments column of the Artificer's Class features table.


A Gunsmith is an Artificer who has crafted a spectacular and terrible device. A Thunder Cannon.

A weapon of unmatched destruction, an Artificer's reason for forging such a thing is varied. Some seek the power, some seek the discovery.

For some it is but a tool to accomplish their goal, for others it is the culmination of the work, for which all the pesky details of adventuring are dedicated to.

Given the destructive potential of a Thunder Cannon, many monsters and men may seek to seize the power for themselves upon witnessing its potential, but even if were to succeed they would soon find that using one of these deadly tools is an art of equal mastery to forging one, something only the one who forged the device will ever truly master, for each Thunder Cannon is unique work, suited only to its creator.

Master Smith[edit]

When you choose this specialization at 3rd level, you gain proficiency with smith’s tools and tinkers tools, you learn the mending cantrip, and can cast it as a bonus action. If you already have proficiency with any of these tools, choose another artisan's tool of your choice.

Thunder Cannon[edit]

At 3rd level, you forge a deadly firearm using a combination of arcane magic and your knowledge of engineering and metallurgy. This firearm is called a Thunder Cannon. It is a ferocious weapon that fires leaden bullets that can punch through armor with ease. (Developing this weapon counts as your first Augmentation.)

You are proficient with the Thunder Cannon. The firearm is a two-handed ranged weapon that deals 2d6 piercing damage, which counts as magical for the purposes of overcoming resistances and immunity from non-magical attacks and damage. Its normal range is 100 feet, and its maximum range is 300 feet. Once fired, it must be reloaded as a bonus action. If you lose your Thunder Cannon, you can create a new one over the course of three days of work (eight hours each day) by expending 100 gp worth of metal and other raw materials.

At 10th level, you may spend the same amount of time and materials to craft a second Thunder Cannon, using different Modifications if you wish. These must still be of a level which you could normally access them.

At 15th level you may make any firearm you acquire into a thunder cannon and it gains the extra damage from being a Thunder cannon however this can only be done with one firearm at 15th level but upon reaching 20th level you may do this to another firearm and if you try to create another with this feature the previous firearm would be destroyed.

At 20th level you may use the Thunder cannon as if it was a single-handed weapon instead of two-handed weapon also you weapon automatically reloads it'a self after running out drawing upon your nearby ammo to replenish itself magically.

Arcane Magazine[edit]

Along with your Thunder Cannon, you craft a leather bag used to carry your tools and ammunition for your Thunder Cannon. Your Arcane Magazine includes the powders, lead shot, and other materials needed to keep that weapon functioning.

You can use the Arcane Magazine to produce ammunition for your gun. At the end of each long rest, you can magically produce 40 rounds of ammunition with this magazine. After each short rest, you can produce 10 rounds.

If you lose your Arcane Magazine, you can create a new one as part of a long rest, using 25 gp of leather and other raw materials.

Cannon Modifications[edit]

At 3rd level, your tinkering has allowed you to develop additional Augments for your Thunder Cannon, called Mods. You automatically gain the Thunder Monger modification, and two modification of your choice, and can choose additional Modifications at 6th, 8th, 10th, 13th, 16th, 18th and 20th levels, as shown by the Augments column of the Artificer's Class features table. Additionally, when you gain a level in this class, you can choose one of the Modification options you know and replace it with another. These modifications are described at the end of the Class description.

Devastating Blasts[edit]

Beginning at 5th level, when you miss an attack with your Thunder Cannon, the target still takes half of the bonus damage from Thundermonger. In the case you gain multiple attacks in one round, this damage may still only occur once.

Stabilizing Bipod[edit]

At 7th level, you develop a gyroscopic brace for your Thunder Cannon, increasing your accuracy and the deadliness of your shots. Your Thunder Cannon now receives +1 to attack and damage rolls.

In addition, by laying Prone and spending no movement on your turn, you gain Advantage to all attacks with your Thunder Cannon. (As per standard rules, this Advantage will normally cancel out the Disadvantage from attacking at Long Range. However, if you have a feat or Augment which removes the Disadvantage, attacks at Long Range will have Advantage as well.)

Arcana Shots[edit]

Beginning at 10th level, you gain the ability to use your own magical energy to guide your shots towards their target. Once per round, you can expend a spell slot to gain a bonus to the attack roll of your next shot equal to twice the level of the spell slot expended.

Alternatively, you may forsake accuracy to directly infuse your ammunition with magical power. When you expend a spell slot, you may choose one element from Force, Fire, Lightning, Cold, Acid, Necrotic and Radiant. Before you attack, you may change the damage type of your attack to this element. Such an attack deals an additional 1d8 damage per level of the spell slot expended, and produces an additional effect based on the element used, as described below.

  • Fire = creatures within 5ft take 1/2 damage
  • Cold = Target's speed is reduced by 5ft per level of spell slot used. The target may use their action to make a Strength check against your spell save DC to remove this penalty.
  • Lightning = target is (1)Restrained/(2)Incapacitated/(3)Stunned/(4)Paralyzed until the start of your next turn, depending on the level of the spell slot used. Once affected, a creature is immune to any further incidences of this effect for 24 hours.
  • Acid = Target's AC is reduced by 1 per level of spell slot used. The target may make a Constitution check against your spell save DC at the start of their turns to end this effect.
  • Necrotic = Target is Frightened of you for 1 round per level of spell slot used.
  • Radiant = all creatures between you and the target take 4 damage per level of the spell slot used
  • Force = the target is pushed back 10ft per level of the spell slot used.

Hyper Analyse[edit]

At 14th level, your experience with your Thunder Cannon, the magical energies that run through it and the daily rigors of combat have resulted in occasional breakthroughs of near-supernatural accuracy as your mind analyses every possible aspect of your shot and adjusts your aim to line up a deadly attack. At the start of your turn, you may begin Concentrating, as if on a spell, and add your Intelligence modifier to the attack roll of your next attack. As long as you maintain concentration, you may continue to add your intelligence modifier to subsequent shots, to a maximum of 5 attacks. However, for every attack enhanced in this way, you gain 1 level of Exhaustion as soon as you lose concentration, whether through choice or because an attack or other circumstance has caused you to fail your Constitution check.

As a side effect of your increased familiarity with your weapon, your bonuses to hit and damage become +2.


At 18th level, when you use the attack action to attack with your Thunder Cannon you can unleash a volley of attacks against one or more creatures within 10 feet of a point you can see within your weapon’s range. The number of attacks you can make is equal to your Intelligence modifier, and multiple attacks can be made against the same target. Each attack is made at advantage. You must have ammunition for each attack, as normal, and you make a separate attack roll for each attack.

You can only use this ability 3 times before needing a long rest to use it again.

Finally, your mastery of your Thunder Cannon increases your bonuses to hit and damage to +3.

Gunsmith Upgrades[edit]

  • Thunder Monger (chamber)

You've developed the arcane engineering skill to upgrade your Thundercannon to deliver its shots with greater force. You can deal an extra 2d6 thunder damage to any creature you hit with an Attack using Thunder Cannon. After discharging this bonus damage, you cannot deal this bonus damage again until the start of your next turn. When using this ability, your Thunder Cannon lets out a resounding boom that can be heard up to 100ft away. This extra damage increases by 1d6 when you reach certain levels in this class: 7th level (3d6), 9th level (4d6), 11th level (5d6), 13th level (6d6), 15th level (7d6), 17th level (8d6), 19th level (9d6) and 20th level (10d6).

  • Harpoon Reel (barrel)

You install a secondary firemode that launches a Harpoon attached to a tightly coiled cord. This attack has a normal range of 30 feet and an maximum range of 60 feet, and it deals only 1d6 piecing damage. This attack can target a surface, object, or creature. A creature struck by this attack is impaled by the Harpoon unless it removes the Harpoon as an action. Removing the Harpoon requires a DC 14 Strength check. While the Harpoon is stuck in the target, you are connected to the target by an 60 ft cord. While connected in this manner, you can use your bonus action to activate the Reel action, pulling yourself to the location if the target if the target is Medium or larger. A Small or smaller creature is pulled back to you. Alternatively, you can opt to disconnect the cord. This attack cannot be used again until the Reel action is taken.

  • Lightning Bayonet. (barrel)

You affix a short blade to the barrel of your Thunder Cannon, allowing you to make a melee weapon attack with it. The blade is a finesse weapon melee weapon that you are proficient with, and deals 1d6 Piercing damage. The blade can be used to apply Thundermonger bonus damage. When Thundermonger bonus damage is dealt with a bayonet attack, the damage type is lightning. Dealing damage this way counts as applying Thundermonger damage for the turn.

  • Divination Scope. (scope)

You add a scope to your Thunder Cannon and enchant the lenses with Divination magic. The Scope has 3 Charges. As a bonus action you can use 1 charge to cast Hunter's Mark (as a 1st level spell). As an action you can use 2 charges to cast See Invisibility or 3 charges to cast Clairvoyance. Spells cast in this way count as a Magical Effect rather than a spell, and as such do not require concentration and last for the full duration, though the Artificer only benefits from their effects while looking down the scope of the weapon. The scope regains all charges after a long rest.

  • Silencer. (Incompatible with Echoing Booms.) (barrel)

You upgrade your Thunder Cannon with a sound dampening module. Your Thunder Cannon becomes whisper quiet, even when using the Thunder Monger modification. Making a shot while Hidden does not automatically reveal your location.

  • Snap Fire. (chamber)

You upgrade your Thunder Cannon for quick shots. You can use your reaction to take a opportunity attack with your Thunder Cannon if an enemy comes within 10 ft of you. You have disadvantage on this attack. This attack only deals Thundermonger bonus damage if you have not dealt the bonus damage since the start of your last turn.

  • Blunderbuss (barrel)

You have converted the barrel of the thunder cannon to magically shatter ammunition as it leaves the barrel, causing shrapnel to be expelled from the weapon instead of a single round. Instead of an attack roll, your weapon now hits all targets in a 20-foot cone. If a creature is within the cone and within 10 feet of you, it takes double damage. All creatures in the cone of effect can make a Dexterity saving throw against your spell save DC to halve the damage it receives. Large or larger creatures make this saving throw at disadvantage. If you target a surface or unattended object with this attack, it is considered to have automatically failed. A weapon with this mod installed is unaffected by other range grade modifications. ThunderMonger damage is applied to all creatures hit by this attack, but is not doubled. This modification is incompatible with the Laser Sight and Stabilizers modifications.

  • Double Barrel (barrel)

You have affixed an additional barrel to the thunder cannon. You can now make an additional attack with your Thunder Cannon whenever you take the attack action. At 15th level, you can use another augment to install this mod again and add a third barrel to your weapon, and so gain a third attack whenever you take the attack action.

  • Overcharge (prerequisite - level 10) (barrel)

You have modified the firing mechanism of the weapon by removing many safety features, allowing you to temporarily overcharge a single shot. At the start of your turn, you may choose to activate this modification. For your next attack, the damage dice from your thunder cannon is multiplied by 4, but you can no longer make any additional attacks for that round using the Thunder cannon that used this feature. In addition, the weapon's overheating mechanisms produces smoke which lightly obscures a 5-foot cube in front of you. Finally, the weapon takes an entire round to reload this must be done manually. If you take damage while reloading, you must make a Constitution saving throw (as if maintaining concentration for a spell), or be forced to restart. Using this mod with the Blunderbuss modification instead causes the weapon to deal maximum damage instead of rolling. The damage is now quadrupled for creatures within 10ft.

  • Stabilizers (barrel)

You have added various fins and shock dampeners to your thunder cannon. You gain a +2 bonus to attack rolls when wielding this weapon. This modification is incompatible with the Blunderbuss modification.

  • Eagle Eye (scope)

You have added a magical vision-enhancing lens to the thunder cannon letting you fire from further away. The weapon's minimum range increases to 60ft, and the maximum range to 500ft also enemies provoke opportunity attacks when entering your range or moving inside your range.

  • Owl's Eye (scope)

You have added a magical vision-enhancing lens to the thunder cannon. Looking through the lens grants you darkvision up to 60 feet; if you already have darkvision, this lens doubles the range of that ability. In addition, in non-magical darkness or dim light, any creature or object seen through the lens is outlined as if affected by faerie fire (no other effects of the spell occur).

  • Quick Mag (chamber)

You have tinkered with the reloading mechanism of the thunder cannon, making it faster and easier. Reloading normally is now a free object interaction instead of a bonus action. The revolver modification now takes a bonus action to reload, instead of a full action. The Overcharge modification still takes a full round to reload, though you have advantage on the saving throws to maintain concentration if you are damaged.

  • Revolver (prerequisite: level 10) (chamber)

You have replaced the firing chamber with a six-chamber revolving mechanism. Due to pre-loading your weapon, it has a higher magical capacity, and all uses of Arcana Shots are considered to be one spell slot level higher. You can choose to reload only after all chambers are empty, though reloading now takes a full action, regardless of how many chambers are empty.

  • Shadowshot (barrel)

You have magically enhanced the barrel of your thunder cannon to draw dark magic from the Shadowfell. Any hit you score against a creature that is surprised is automatically a critical hit. If the attack misses, you take 1d6 necrotic damage as the dark energies backlash against you, hungry for blood. This damage cannot be avoided or reduced in any way. Using this modification with the Blunderbuss mod gives a single target disadvantage on their saving throw, with the self-damage raising to 2d6 and triggering if that target succeeds the save.

  • Disguise. (barrel)

As a bonus action on your turn you can magically collapse your Thunder Cannon into a a small item. If transformed into something like a spyglass all (scope) modifications remain functional, but the weapon is otherwise inert. You can use another bonus action to return it to a firearm.

  • Echoing booms. (incompatible with Silencer) (barrel)

You have removed several limiters on your thunder cannon to increase its damage at the expense of stealth. On a hit, your Thunder cannon now does an additional 1d6 damage, and creatures must make a DC 10 Strength saving throw or be knocked prone. The sound of your thunder cannon firing can be heard from up to 300ft away.


Prerequisites. To qualify for multiclassing into the Artificer class, you must meet these prerequisites: Intelligence 13

Proficiencies. When you multiclass into the Artificer class, you gain the following proficiencies: one skill from the Artificer skill list, one tool proficiency, light armor, medium armor, simple weapons

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