Multiattack

The tetomatli makes one head slam attack and one wing buffet attack.

Head Slam

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 21 (3d10 + 5) bludgeoning damage. If the tetomatli scores a critical hit against a target wearing metal armor, the target must succeed on a DC 15 Strength saving throw or its armor is destroyed. A creature wearing magical armor has advantage on this saving throw. A creature wearing adamantine armor is unaffected.

Wing Buffet

Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) bludgeoning damage.

Tremor (Recharge 6)

The tetomatli slams its head repeatedly into the ground, creating a magical shockwave. Each creature within 20 feet of the tetomatli must succeed on a DC 15 Dexterity saving throw or be knocked prone and have disadvantage on attack rolls and Dexterity checks until the end of its next turn.