From Pathfinder Kingmaker, which isn't enabled.

Oversized Chimera

CREATURE 12

Variant chimera

The chimera is the archetypal example of an unnatural monster made up of a monstrous mix of wildly different component creatures: in this case, a lion, a dragon, and a goat. Wild, hateful, and hungry, it tries to eat any creature it sees, but sometimes a strong-willed master is able to compel a chimera to serve as a guardian or even a mount.

Perception +23; darkvision, scent (imprecise) 30 feet

Languages Draconic

Skills Acrobatics +20, Athletics +25, Stealth +22

Str +7, Dex +2, Con +5, Int -3, Wis +5, Cha +0

AC 33; Fort +25, Ref +22, Will +19

HP 220

Attack of Opportunity

Trigger A creature within the monster's reach uses a manipulate action or a move action, makes a ranged attack, or leaves a square during a move action it's using.

Effect The monster attempts a melee Strike against the triggering creature. If the attack is a critical hit and the trigger was a manipulate action, the monster disrupts that action. This Strike doesn't count toward the monster's multiple attack penalty, and its multiple attack penalty doesn't apply to this Strike.

Three Headed

Any ability that would sever a chimera's head (such as a critical hit with a Vorpal Weapon) severs one head at random. Losing a head doesn't kill a chimera (as long as it has one head left), but it does prevent it from making Strikes with the lost head or using the head's Breath Weapon.

Triple Opportunity

A oversized chimera gains 2 extra reactions each round that it can use only to make Attacks of Opportunity. It must use a different head for each reaction, and it can't use more than one on the same triggering action. If it loses one of its heads, it also loses one of these extra reactions.

Speed 25 feet, fly 40 feet

Melee Dragon Jaws +26, Damage 2d6+11 piercing plus 3d6 fire

Melee Lion Jaws +26, Damage 3d10+11 piercing

Melee Goat Horns +26, Damage 3d10+11 piercing

Melee Claw +26 (agile, unarmed), Damage 3d8+11 slashing

Breath Weapon (arcane)

The oversized chimera breathes a 30-foot cone of fire that deals 13d6 fire damage to all creatures in the area (DC 32 basic Reflex save).

The chimera can't use Breath Weapon again for 1d4 rounds.

Draconic Bite

An oversized chimera's dragon head deals an extra 3d6 fire damage (already included).

Three-Headed Strike

The oversized chimera makes a Strike with its dragon jaws, lion jaws, and goat horns, each at a -2 penalty and targeting a different creature. These Strikes count as only one attack for the chimera's multiple attack penalty, and the penalty doesn't increase until after it has made all three attacks.

Pathfinder KingmakerOGL