Mythic Monsters (5e Variant Rule)

This is part of the Mythic Sourcebook

Mythic Monsters

Mythic monsters are entities of immense power, beyond that of even legendary creatures. They are rarely found in the Material Plane except at cosmic distances, instead residing in the vast outer planes or even the far realm. When a mythic creature disturbs the mortal realm, it can dominate on a continental scale; a whole nation's army might not be enough to quell the turmoil.

These creatures are a challenge for 20th level player characters, with epic boons or other high-level benefits.

Size

Colossal

Creatures of colossal size occupy a 45 by 45 ft. space or larger (or 9 by 9 squares). They have d66 Hit Dice (average 330.5 ½).

Titanic

Creatures of titanic size occupy a 90 by 90 ft. space or larger (or 18 by 18 squares). They have d100 Hit Dice (average 500.5 ½).

Other Statistics

Some statistics continue to grow as CR increases, whilst others are bounded.

• Proficiency bonus continues with linear progression
• Hit points, damage and save DCs are unbounded
• AC has no strict bound, but becomes more exceptional the further it moves past 19.

Statistics by Challenge Rating

Use this in conjunction with the Creating a Monster chapter in the DMG.

Monster Statistics by Challenge Rating CR Prof. Bonus AC Hit Points Attack Bonus Damage/ Round Save DC 31 +9 19 851–895 +14 321–338 23 32 +9 19 896–940 +14 339–356 23 33 +10 19 941–985 +15 357–374 24 34 +10 19 986–940 +15 375–392 24 35 +10 19 941–985 +15 393–410 24 36 +10 19 986–1,030 +16 411–428 25 37 +11 19 1,031–1,075 +16 429–446 25 38 +11 19 1,076–1,120 +17 447–464 26 39 +11 19 1,121–1,165 +17 465–482 26 40 +11 19 1,166–1,300 +17 483–536 26 41 +12 19 1,301–1,435 +18 537–590 27 42 +12 19 1,436–1,570 +18 591–644 27 43 +12 19 1,571–1,705 +18 645–698 27 44 +12 19 1,706–1,840 +18 699–752 27 45 +13 19 1,841–1,975 +19 753–806 28 46 +13 19 1,976–2,110 +20 807–860 29 47 +13 19 2,111–2,245 +20 861–914 29 48 +13 19 2,246–2,380 +20 915–968 29 49 +14 19 2,381–2,515 +21 969–1,022 30 50 +14 19 2,516–2,650 +21 1,023–1,076 30 Beyond CR 50? Since DC 30 represents an "impossible" task, and an attack bonus of +21 gives the monster a better than 50-percent chance of striking AC 30, I decided to end the CR track at that point. Further progression would simply be a case of increasing the hit point and damage values - you should instead consider creating the monster as a multi-statblock entity (see below). For example, if I wanted my monster to have 10,000 hit points, I could create it with four CR 49 statblocks. XP awards by Challenge Rating CR XP CR XP 31 175,000 41 520,000 32 195,000 42 580,000 33 220,000 43 660,000 34 245,000 44 740,000 35 260,000 45 820,000 36 290,000 46 900,000 37 330,000 47 980,000 38 350,000 48 1,060,000 39 400,000 49 1,140,000 40 460,000 50 1,220,000 If you feel the need to advance beyond CR 50, a creature grants an additional 80,000 XP for each challenge rating above 50. Monster Features Most mythic creatures will have legendary resistance and legendary actions. Here are some ideas for mythic monster features. Prescient The mythic cannot be surprised and always goes first in initiative order. CR Increase the mythic's effective damage for 1 round by half of it's normal damage. Legendary Ability (3/day) If the mythic fails an ability check, it can choose to succeed instead. CR — Omniproficient The mythic is proficient in all skills, tools and languages. CR — Unattune (3/Day) When the mythic hits a creature, that creature loses attunement to one of their magic items. CR — Unknowing Aura Creatures within 120 feet of the mythic are not considered proficient with any skills. CR Add 1 to the mythic's effective AC. Multi-Entity Creatures Colossal or larger creatures can be represented by a group of "entities": a set of core statistics, and one or more peripheral statistics, each acting on its own initiative with its own actions. The core represents the main body – or agency – of the creature. It is the only component that has legendary actions, and is the component that must be defeated in order to defeat the creature as a whole. Its size is that of the whole creature The peripherals represent limbs or modules attached to the core. When a peripheral entity is reduced to 0 hit points, it is disabled, reducing the capabilities of the whole creature but not defeating it. Peripheral entities are usually mindless (INT 1, CHA 1) and oblivious (WIS 1); and have an immunity to these conditions: blinded, charmed, deafened, frightened, prone, unconscious They have a speed of 0, and can't benefit from any bonus to its speed: it is always attached to the core entity (either adjacent to it or in the same space as it). They can act even if the core entity is incapacitated, but are incapacitated if the core entity has 0 hit points. They can target anything that the core can see. Peripherals must be smaller than the core entity and have, at most, half as many hit dice. Ideas: A beholder deity with five or more peripheral eye stalks with different spells-like abilities. A golem with peripheral shoulder cannons, and a peripheral chest plate that must be destroyed to reveal the golem's weak point. When not to use: If a creature has multiple identical peripherals, it might be better to use a trait similar to the multiple heads of a hydra, as there's no need to players to target a specific location. List of Mythic Monsters Name CR Type Abaddon's Locusts 32 fiend Adult Dust Garther 20 monstrosity Adult Force Dragon 29 dragon Adult Force Shadow Dragon 29 dragon Adult Prismatic Dragon 29 dragon Alasklerbanbastos 50 dragon Ancient Blue Inferno Dragon 37 dragon Ancient Dust Garther 28 monstrosity Ancient Prismatic Dragon 36 dragon Ate, Lord of the East (Berserk Supplement) 50 celestial Bahamut 40 dragon Black Carpet 30 ooze Calamity Ganon 35 fiend Dark Inferno χ 33 fiend Elder Chroma Dragon 50 dragon Elder Dust Garther 34 monstrosity Gedula, Lord of the South (Berserk Supplement) 50 celestial God Hand 50 celestial Great Wyrm Black Dragon 32 dragon Great Wyrm Blue Dragon 33 dragon Great Wyrm Brown Dragon 33 dragon Great Wyrm Force Dragon 41 dragon Great Wyrm Green Dragon 33 dragon Great Wyrm Prismatic Dragon 41 dragon Great Wyrm Red Dragon 39 dragon Great Wyrm White Dragon 32 dragon Hydra God 50 monstrosity Katsuyu, True Form (Shinobi World Supplement) 26 beast Lion Turtle 30 monstrosity Living City 50 construct Living Dimension 38 aberration Manda II (Shinobi World Supplement) 20 beast Markt, Lord of the North (Berserk Supplement) 50 celestial Mythic Dust Garther 40 monstrosity Mythic Tarrasque 40 monstrosity Mythic Wyrm Force Dragon 50 dragon Ve, Lord of the West (Berserk Supplement) 50 celestial Walking Castle 35 construct White Snake Sage (Shinobi World Supplement) 20 beast Wyrm Red Dragon 32 dragon Young Dust Garther 15 monstrosity Young Prismatic Dragon 23 dragon Zombie Boss 40 undead 5.00 (3 votes) Back to Main Page → 5e Homebrew → Rules