Tarrasque

If the monster fails a saving throw, it can choose to succeed instead.

The monster has Advantage on saving throws against spells and other magical effects.

If the monster is targeted by a Magic Missile spell or a spell that requires a ranged attack roll, roll. On a 1–5, the monster is unaffected. On a 6, the monster is unaffected and reflects the spell, turning the caster into the target.

The monster deals double damage to objects and structures.

The monster makes one Bite attack and three other attacks, using Claw or Tail in any combination.

Melee Attack: +19 to hit. reach 15 ft. Hit: 4d12 + 10 piercing damage.

Melee Attack: +19 to hit. reach 15 ft. Hit: 4d8 + 10 slashing damage.

Melee Attack: +19 to hit. reach 30 ft. Hit: 3d8 + 10 bludgeoning damage.

Constitution Save: DC 27. target: 150-foot cone, creatureOrObject. Failure: 12d12 thunder damage; success: half.

Strength Save: DC 27. target: creature. Constitution Save: DC 27. target: creature.

The monster moves up to half its Speed, and it makes one Claw or Tail attack.

The monster moves up to its Speed. At the end of this movement, the monster creates an instantaneous shock wave in a -. Emanation originating from itself. Creatures in that area lose Concentration and, if Medium or smaller, have the Prone condition. The monster can't take this action again until the start of its next turn.