Large monstrosity, chaotic evil

Armor Class 16 (natural armor)
Hit Points 95 (10d10 + 40)
Speed 50 ft., swim 30 ft.

19 (+4) 13 (+1) 18 (+4) 8 (-1) 16 (+3) 14 (+2)

Saving Throws Wis +5
Skills Athletics +7, Perception +6, Stealth +7
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 90 ft., passive Perception 16
Languages Common, Draconic, Void Speech
Challenge 5 (1,800 XP)

Special Traits

  • Charge. If the ophidiotaur moves at least 30 feet straight toward a target and then hits it with a poisoned glaive attack on the same turn, the target takes an extra 5 (1d10) slashing damage.
  • Magic Resistance. The ophidiotaur has advantage on saving throws against spells and other magical effects.


  • Multiattack. The ophidiotaur makes two attacks: one with its bite and one with its glaive.
  • Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 8 (1d6 + 4) piercing damage plus 3 (1d6) poison damage. The target must succeed on a DC 14 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
  • Poisoned Glaive. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) slashing damage plus 3 (1d6) poison damage.
  • Call Serpents (1/Day). The ophidiotaur magically calls 1d6 poisonous snakes or flying snakes (ophidiotaur’s choice). The called creatures arrive in 1d4 rounds, acting as allies of the ophidiotaur and obeying its spoken commands. The snakes remain for 1 hour, until the ophidiotaur dies, or until the ophidiotaur dismisses them as a bonus action.


This creature could be mistaken for a large centaur if not for the black and green scales covering its body and its cobra-like head. Its hiss sounds like a hundred angry vipers, and the venom dripping from creature’s long fangs sizzles as it lands.

Born from Corruption. An ophidiotaur is created when a centaur is transformed via a foul ritual that combines its form with that of a venomous serpent. Most centaurs do not survive the process, but those that do can reproduce naturally, potentially creating even more of these serpentine monstrosities.

Servants of Serpents. Ophidiotaurs serve evil nagas, serpentfolk of Yig, and even dragons. While they make poor guards, ophidiotaurs excel as shock troops and mounts for serpentfolk. Ophidiotaurs that survive the fall of their masters escape into the wilds and form loose-knit tribes ruled by the strongest individual. Centaurs loathe and pity ophidiotaurs in equal measure and put down the abominations whenever they can.

Section 15: Copyright Notice

Tome of Beasts 2. © 2020 Open Design LLC; Authors Wolfgang Baur, Celeste Conowitch, Darrin Drader, James Introcaso, Philip Larwood, Jeff Lee, Kelly Pawlik, Brian Suskind, Mike Welham.

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