Clockwork Tarrasque (5e Creature)
From D&D Wiki
Huge construct, unaligned
Damage Immunities poison, psychic
Antimagic Susceptibility. The clockwork tarrasque is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the clockwork tarrasque must succeed on a Constitution saving throw against the caster's spell save DC or fall unconscious for 1 minute.
Magic Resistance. The clockwork tarrasque has advantage on saving throws against spells and other magical effects.
Multiattack. The clockwork tarrasque makes three attacks: one with its bite, one with its horns, and one with its tail.
Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) piercing damage.
Horns. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) piercing damage.
Tail. Melee Weapon Attack: +7 to hit, reach 20 ft., one target. Hit: 9 (2d4 + 4) bludgeoning damage.
A clockwork tarrasque is a replica of the real thing, but somewhat smaller and considerably less powerful. Usually created as a practical joke or to guard a place, the clockwork tarrasque has built up quite a following of pranksters who place illusions on it then make it tromp around, frightening heroes left and right. As a result, many places have banned these behemoths, but some artificers still use them to guard dungeons. After the clockwork tarrasque dies, it is usually broken down into magical energy then used to create yet another clockwork tarrasque.