Chimera

Reactive Heads. The chimera can take three reactions per round, but not more than one per turn.

Three Heads. The chimera has advantage on Perception checks and on saving throws against being blinded, charmed, deafened, frightened, stunned, and knocked unconscious, and it can't be flanked.

Wakeful. When one of the chimeras heads is asleep, the others are awake.

Headbutt. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage. The target must succeed on a DC 15 Strength saving throw or fall prone.

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

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 9 (2d4 + 4) slashing damage or 14 (4d4 + 4) slashing damage against a prone target.

Breath Weapon (Recharge 5-6). The dragon head breathes fire in a 15-foot cone. Creatures in the area make a DC 15 Dexterity saving throw taking 21 (6d6) fire damage on a failed save or half damage on a success.

Tail Swipe (1/Day). If a creature within 5 feet hits the chimera with a melee attack, the attacker is battered by the chimeras tail. The attacker makes a DC 15 Strength saving throw. On a failure, it takes 9 (2d4 + 4) bludgeoning damage and is pushed 10 feet from the chimera and knocked prone.

Winged Charge (1/Day). If a creature the chimera can see hits it with a ranged attack, the chimera leaps off the ground and moves up to its fly speed towards the attacker. If within range, the chimera then makes a headbutt attack against the attacker.

The chimera can take 2 legendary actions. Only one legendary action can be used at a time and only at the end of another creatures turn. It regains spent legendary actions at the start of its turn.

Bite. The chimera uses its Bite attack.

Claw. The chimera uses its Claw attack.