Chimera (Updated)

 Sure-Footed: The chimera has advantage on Strength and Dexterity saving throws made against effects that would knock it prone.
 

Charge: If the chimera moves at least 20 ft. straight toward a target and then hits it with a horns attack on the same turn, the target takes an extra 4 (1d8) bludgeoning damage. If the target is a creature, it must succeed on a DC 16 Strength saving throw or be knocked prone.

Keen Smell: The chimera has advantage on Wisdom (Perception) checks that rely on smell.

Pounce: If the chimera moves at least 20 ft. straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 16 Strength saving throw or be knocked prone. If the target is prone, the chimera can make one claws attack against it as a bonus action.

Legendary Resistance (3/Day). If the chimera fails a saving throw, it can choose to succeed instead.

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

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

Horns. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 11 (1d12 + 5) bludgeoning damage.

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

Fire Breath (Recharge 5–6). The dragon head exhales fire in a 15-foot cone. Each creature in that area must make a DC 16 Dexterity saving throw, taking 31 (7d8) fire damage on a failed save, or half as much damage on a successful one.