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Demon, Hydrodemon

Large fiend (demon), neutral evil

Armor Class 15 (natural armor)
Hit Points 85 (9d10 + 36)
Speed 30 ft., fly 40 ft., swim 60 ft.

18 (+4) 14 (+2) 18 (+4) 8 (–1) 11 (+0) 14 (+2)

Saving Throws Dexterity +5, Constitution +7
Skills Perception +6
Damage Resistances cold, fire, lightning
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 16
Languages Abyssal
Challenge 5 (1,800 XP)

Special Traits

  • Amphibious. The hydrodemon can breathe air and water.
  • Magic Resistance. The hydrodemon has advantage on saving throws against spells and other magical effects.
  • Magic Weapons. The hydrodemon’s weapon attacks are magical.
  • Innate Spellcasting. The hydrodemon’s spellcasting ability is Charisma (spell save DC 13, +5 to hit with spell attacks). It can innately cast the following spells, requiring no material components:


  • Multiattack. The hydrodemon makes one Bite attack and two Claws attacks. The demon can use its Sleep Spittle instead of using its Bite.
  • Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) piercing damage, and the target is grappled (escape DC 14). Until this grapple ends, the target is restrained and the demon can’t bite another target.
  • Claws. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) slashing damage.
  • Sleep Spittle. One target within 60 ft. must succeed on a DC 15 Wisdom saving throw or fall unconscious for 1 minute. The sleeping target can be awakened if someone uses an action to shake or slap the sleeper awake, and the target will wake if it takes damage.
  • Summon (1/day). The demon chooses what to summon and attempts a magical summoning. A hydrodemon has a 30% chance of summoning one hydrodemon. A summoned demon appears in an unoccupied space within 60 feet of its summoner, acts as an ally of its summoner, and can’t summon other demons. It remains for 1 minute, until it or its summoner dies, or until its summoner dismisses it as an action.
Section 15: Copyright Notice

City of Brass ©2018 Frog God Games; Authors: Casey Christofferson and Scott Greene