Huge monstrosity, unaligned

Armor Class 15 (natural armor)
Hit Points 184 (16d12 + 80)
Speed 50 ft.

26 (+8) 10 (+0) 20 (+5) 2 (-4) 12 (+1) 8 (-1)

Saving Throws Con +9, Wis +5
Skills Perception +5
Damage Resistances bludgeoning, piercing, and slashing from nonmagical attacks
Senses passive Perception 15
Challenge 13 (10,000 XP)

Special Traits

  • Blood Frenzy. The tricenatorus has advantage on melee attack rolls against any creature that doesn’t have all its hp.
  • Relentless (Recharges after a Short or Long Rest). If the tricenatorus takes 40 damage or less that would reduce it to 0 hp, it is reduced to 1 hp instead.
  • Siege Monster. The tricenatorus deals double damage to objects and structures.
  • Tail Spike Regrowth. The tricenatorus has twenty-four tail spikes. Used spikes regrow when the tricenatorus finishes a long rest.


  • Multiattack. The tricenatorus makes two attacks: one with its bite and one with its gore, or two with its tail spikes. It can’t use its gore against a creature restrained by its bite.
  • Bite. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 34 (4d12 + 8) piercing damage. If the target is a Medium or smaller creature, it is grappled (escape DC 18). Until this grapple ends, the target is restrained, and the tricenatorus can’t bite another target.
  • Gore. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 26 (4d8 + 8) piercing damage and the target must succeed on a DC 18 Strength saving throw or be knocked prone.
  • Tail Spike. Ranged Weapon Attack: +12 to hit, range 150/300 ft., one target. Hit: 26 (4d8 + 8) piercing damage.


A bipedal dinosaur with massive horns on its face, back, and tail roars, revealing an enormous mouth filled with rows of razor teeth.

Tricenatoruses are the rage-filled result of a transmutation experiment gone wrong.

Unnatural Mistakes. A transmutation wizard attempted to magically bring together two dinosaurs to create the ultimate guardian, one with the power of the tyrannosaurus and the docile nature of the triceratops. Instead, the wizard created unnatural, spiked monsters with a hunger for flesh and an unmatched rage.

Always Angry. From the moment they hatch, tricenatoruses are angry. This rage makes them reckless and difficult to harm. Most of these monstrous dinosaurs stay deep within the jungle, but tricenatoruses are relentless when they find prey, leading them to sometimes chase explorers into civilized settlements.

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.

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