5e SRD >Creatures >

Yothan Designer

Family: Yothans

Large dragon, lawful evil

Armor Class 14 (natural armor)

Hit Points 93 (11d10 + 33)

Speed 50 ft., climb 50 ft.

18 (+4 13 (+1) 16 (+3) 17 (+3) 15 (+2) 16 (+3)

Skills Arcana +5, Nature +5, Perception +4

Senses darkvision 60 ft., passive Perception 14

Languages Common, Draconic, Yothan

Challenge 4 (1,100 XP)

Special Traits

  • Keen Sight. The yothan has advantage on Wisdom (Perception) checks that rely on sight.
  • Magic Resistance. The yothan has advantage on saving throws against spells and other magical effects.


  • Multiattack. The yothan designer makes two different attacks.
  • Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage and the target must make a DC 13 Constitution saving throw; it takes 11 (2d10) poison damage on a failure, or half as much damage on a success.
  • Claws. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage.
  • Reshape Flesh. Melee Spell Attack: +6 to hit, reach 5 ft., one creature. Hit: The target must make a DC 13 Constitution saving throw as its flesh transforms and weakens. On a failed save, its hit point maximum is reduced by 16 (3d10) and it is transformed in one of the following ways until undone with a dispel magic or remove curse spell or other magic that can remove a curse or end a spell. On a successful save, its hit point maximum is reduced by half as much until it finishes a short or long rest and it is not transformed.
  • Cripple Limb. One of the target’s limbs becomes extremely hard to use, such as by stretching it to the point of weakness, shriveling muscle, or adding an unstable joint that bends the wrong way. The target has disadvantage on ability checks and attack rolls using that limb. It can’t use that limb to wield a shield or provide somatic components. If the limb is one it uses for locomotion, its speed is reduced by 10 feet.
  • Melt Flesh. Seamless flesh covers one of the following: eyes, ears, or nose and mouth. It is blinded, deafened, or unable to breathe or speak, respectively. The flesh can be cut open as an action with a slashing or piercing weapon or tool, which deals 1d4 damage to the target and removes the condition.
  • Wither. The target’s Strength or Dexterity score (yothan’s choice) is reduced by 1d4, but not lower than 1.
  • Tail. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage.


A yothan designer might create all manner of horrifically transformed monsters for various purposes or to satisfy its perverse curiosity on a variety of topics. Tamer experiments might resemble an owlbear, pegasus, or chimera, but they can be far more creative. A designer could, for instance, turn a dragon into a smelting furnace.

A yothan designer is responsible for creating the servitor entities which their species once used in great number.

Designers are trained in magical and technological techniques which let them carve flesh like wax and generate entirely new purposes out of existing beings. When encountered, a designer is not generally equipped to defend itself beyond the significant natural defenses common to all yothans and the ability to inflict minor mutations on foes. Untrained yothans are similar to designers but lack the Reshape Flesh action.

Section 15: Copyright Notice

Sandy Petersen's Cthulhu Mythos, © 2018, Petersen Games; Authors: Sandy Petersen, David N. Ross, James Jacobs, Arthur Petersen, Ian Starcher.

This is not the complete section 15 entry - see the full license for this page