Creatures that can see the aberrant chimera at the start of its turn must make a DC 14 Wisdom saving throw or else attacks that turn are at disadvantage, as alien energies of the creature probes their mind.

Multiattack. The chimera makes three attacks: one with its bite, one with its tentacles, and one with its claws. When its acid breath is available, it can use the breath in place of its bite or horns.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage.

Tentacles. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 4 bludgeoning damage, and the target is grappled (escape DC 10). Until this grapple ends, the octopus can't use its tentacles on another target.

Claws. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Acid Breath (Recharge 5–6). The dragon head exhales acid in a 15-­-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 31 (7d8) acid damage on a failed save, or half as much damage on a successful one.