The Assassin: Custom Hidden Blades (5e Other)

Hidden Blade Customization List

the Hidden Blade is an extremely versatile weapon, allowing it to change and adapt for it's owner's various uses. Below is a list of ways to adapt and modify the Hidden Blade. Depending on where it was created and by whom, the Hidden Blade might have an amount of predetermined customization slots or only able to take certain modifications without damaging the integrity of the tool itself. Below, you'll find a list of customizations, their cost, and the tools and DC check needed to attach it to the Hidden Blade.

In addition, a single Hidden Blade Holds 2 slots for customizations.

Attachment Cost	Cost	Effect	Tool Proficiency Needed	Slot Cost	DC
Bracer Guard.	30/40/500gp	The Hidden Blade will be attached to a armored bracer, adding +1 to AC. Depending on your Armor Proficiency, the cost will vary. 60gp for Light armor, 80gp for Medium armor, and 100gp for Heavy armor.	Smith's Tools	1/2	10
Hidden Gun.	100gp	The Hidden Gun adds a rudimentary firearm to the weapon. It has the Ammunition (range 50/200), Loading, and Loud properties and deals 2d6 piercing damage. The Hidden Gun requires an action to reload and will reveal your position to everyone within 300 feet. You cannot hide until you are 60 feet from your firing position. You are not proficient with the Hidden Gun unless you also have proficiency with Firearms and you do not add your Dexterity Modifier to the damage.	Gunsmith's Tools	1	15
Hook Blade.	40gp	The Hook Blade allows you to double your proficiency when scaling vertical walls and terrain. When you make an attack with the Hidden Blade, you can use your reaction to deal no damage, but pull your opponent into a grapple or push them up to 10 feet away from you. It can also be used to zipline between buildings or to the ground.	Tinkerer's Tools	1/2	10
Phantom Blade.	150gp	The Phantom Blade is actually a small, unfolding crossbow attached to the Hidden Blade. It has a range of 30/90 and deals 1d6 piercing damage. The weapon is completely silent, and reloads using specialized crossbow bolts. You can not add your proficiency unless you are also proficient in Martial Ranged weapons or Crossbows, and you can add your Dexterity modifier to the damage.	Smith's Tools	1	10
Pivot Blade.	75gp	The Pivot Blade modifies the Hidden Blade to have a pivotal point, allowing it to rotate 90 degrees in either direction to use as a knife. While equipped, you have advantage in skinning animals and can use it in dual wielding as a dagger or a parrying dagger, adding +2 to AC as a reaction.	Smith's or Tinkerer's Tools	1	15
Poison Blade.	100gp	The Poison Blade adds a secondary, hollow, blade. This deals 1 piercing damage and hits automatically if used while you are hidden or the opponent is stunned. Acting as a syringe, it injects the poison of your choice into the target. The Poison Blade is completely undetectable while you are hidden or inconspicuous.	Poisoner's Kit	1	15
Poison Dart.	50gp	The Poison Dart is an upgrade to the Poison Blade, allowing it to be also shot from a range of 25/100. The darts are coated in the same poison prepared for the Poison Blade, and deal 1 damage. The darts are undetectable by the target and are only revealed by an extended search. You can also choose to retrieve the darts for another use.	Poisoner's Kit	1	16
Shock Blade.	300gp	This is a modification that replaces the Hidden Blade for the 21st Century. By removing the blade and replacing it by a pair of forked prongs that deal 1d4 piercing damage. Upon contact with the target, they activate, dealing 4d8 lightning damage. The specialized battery must be recharged or replaced after 20 successful attacks. If you have the Flashlight modification installed, the two batteries are connected, granting you 10 additional uses.	Tinkerer's Tools	2	18
Trident Blade.	150gp	This is a modification that replaces the Hidden Blade. Replacing the blade with a 2 pronged blade that would split apart to reveal a third blade in the middle. It deals 3d4 slashing or piercing damage, though it cannot be used in conjunction with almost any other attachment due to it's odd design. Only the Arm Brace can be added with this blade.	Smith's Tools	2	18
Audio Recorder.	50gp	Your Hidden Blade is outfitted with an audio recorder, allowing you greater espionage and information gathering capabilities, straight from the source. It can also be used as a music-player for the especially long and/or boring mission.	Tinkerer's Tools	1/2	13
Bullet-Proof Buckler.	150gp	The sleeve for the Hidden Blade now has a retractable bulletproof shield that can be extended using a bonus action if your character is proficient with the Hidden Blade and an action if not. The buckler adds a +2 to AC, however you cannot use your Hidden Blade as nothing more than a non-weaponized tool meanwhile. This modification cannot be used in conjunction with any other attachment due to it's odd design.	Smith's or Tinkerer's Tools	1	18
Corvix Blade.	100gp	The Corvix Blade is a modification that replaces the Hidden Blade, replacing it with a crow-styled motif. While the Corvix Blade is unsheathed and noticeable, you have advantage in Intimidation checks and enemies are Frightened of you instead of being stunned by the Hidden Blade's special effect.	Smith's Tools	1	16
Flashlight.	20gp	The Flashlight allows you to shed a bright light at your surroundings to a range of 30 feet bright and an additional 30 feet dim. The Flashlight has a battery lasting a total 6 hours. If you have the Shock Blade, the two batteries are connected, granting you an extra 4 hours of light.	Tinkerer's Tools	1/2	15
Fork & Knife.	30gp	This is a replacement for the Hidden Blade, interchanging the blade with a Fork and/or Knife depending if you have one or two Hidden Blades at your disposal. Both the fork and knife deal 1d4 piercing and slashing damage respectively. The modification was for Assassins on the go, whom need to enjoy a hearty meal without need to bring cutlery or utensils.	Tinkerer's Tools	1/2	10 (Each)
Grappling-Hook blade.	200gp	This is an upgrade to the Hook Blade, allowing you extra abilities in addition to what the Hookblade did previously. You can fire the Grappling Hookblade out to a ledge or object and either retract it using the electric-powered high-tensile strength magnetic tethering cable (capable of lifting 260lbs of weight without stress) or climb up or rappel downward. This tool negates any climbing-checks made against you. However, you will still need to make a ranged attack roll if you fall off a ledge to avoid falling to your possible death.	Tinkerer's Tools	1	17
Hidden Message.	50gp	This is a secret messaging kit hidden inside the Hidden Blade. Equipped with crumpled scraps of paper, a small inkwell of invisible ink and a needle to write with, a messaging codex carved intricately into the steel, and a solar-powered light capable of viewing messages left by others.	Tinkerer's Tools/Calligrapher's Supplies	1/2	15
Hidden Pocket.	25gp	This adds a small, secret pocket, useful for storing small or easily stored objects like tacks, bullets, condoms, needle & thread, chalk, or a small mirror.	Tinkerer's Tools	1/2	10
Lighter.	5gp	This attaches a small fire starter to the underside of your Hidden Blade. It can be used as a tinderbox or used to heat the blade itself. If used this way, the blade deals an additional 2d8 fire damage to the target. The extra damage lasts for 3 minutes, however extended use with the heated Hidden Blade may warp or deform it. The Heated Blade could also be used to cauterize wounds, dealing only half the fire damage but stopping any bleeding effects suffered by the target.	Tinkerer's Tools	1/2	10
Lockpick Blade.	20gp	This is a replacement for the Hidden Blade, replacing the blade with a high-quality lockpick. It deals 1d4 piercing damage only, however it acts like a set of Thieves' Tools, ranting Advantage to Lockpicking if you are proficient in both the Hidden Blade and Thieves' Tools.	Tinkerer's Tools	1/2	15
Scalloped Fins.	50gp	This is a passive modification to the Hidden Blade. Sharp, bladed fins along the side of the outer forearm of the Hidden Blade allow you to deal 1 slashing damage in retaliation for a failed attack roll against you from any source adjacent to you. The fins are somewhat bulky and remove the Covert property from the Hidden Blade. If you have the Bracer Guard equipped, you can add retractable fins to the Hidden blade for 50gp extra, allowing you to keep weapon covert.	Smith's Tools	1	16
Semi-Automatic Hidden Gun.	250gp	This is an upgrade to the Hidden Gun modification. Replacing the rudimentary firearm with a more streamlined version. It looses the Loading property and gains Reload (6 shots). Some are even outfitted with a silencer mechanism of sorts, reducing the range by 10 feet but also removing the Loud property as well.	Gunsmith's or Tinkerer's Tools	2	17
Smoke Maker.	50gp	This modification adds a small, yet potent canister of liquid that can be exposed to air and quickly vaporize to create a cloud of smoke up a to 20 feet radius around you, momentarily blinding everyone around you. You can add poison to the concoction and make it a poison cloud, however it will effect you as well if you don't have proper preparation for the poison or an antidote.	Alchemist's Supplies	1	16
Ionic Plasma Blade.	800gp	This is a replacement to the Hidden Blade. Replacing the blade with an ionic plasma chamber that projects a powerful laser that easily cuts through tungsten or carbon-based metal and life forms alike. The blade deals 2d6 fire and 2d6 lightning damage. This modification cannot be used alongside any other attachment.	Tinkerer's Tools	2	18

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