Tarrasque
CR 30 Gargantuan Monstrosity Armor Class 25 (natural armor) Hit Points 680 Speed 40 ft., burrow 30 ft. Perception 19 Stealth 13ResistantIf the tarrasque fails a save, it can choose to succeed instead. Immune fire, poison; bludgeoning, piercing, and slashing damage from nonmagical attacks | charmed, frightened, paralyzed, poisoned Senseskeensense …