Huge Beast, unaligned
Armor Class 13 (natural armor)
Hit Points 95 (10d12+30)
Speed walk +40
Challenge 5
Skills perception +2
Senses passive Perception 12
Languages —
Relentless (Recharge: Short/Long Rest). If therizinosaurus would take 20 or less damage that would reduce it to less than 1 hp it is reduced to 1 hp instead.
Multiattack. Two claw attacks.
Claw. Melee Weapon Attack: +8 to hit, 15 ft., one target, 18 (3d8+5) slashing damage and the target must make DC 16 Str save or be knocked prone.
Source: Tome of Beasts 3 · OGL/Open