Beyn

Multiattack. Beyn makes three attacks: one with its bite, and two with its claws, or two with its claws and one with its breathe. 

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one creature. Hit: 11 (2d6 + 10) piercing damage.

Claws. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 10) slashing damage.

Prismatic Breath (Recharge 5-6). Choose acid, cold, fire, lightning, or poison. The creature can use an action to exhale energy of the chosen type in a 15-foot cone. Each creature in that area must make a Dexterity saving throw, taking 3d6 damage of the chosen type on a failed save, or half as much damage on a successful one.

Infused Strikes. When another creature within 30 feet of the drake that it can see hits with a weapon attack, the drake infuses the strike with its essence, causing the attack to deal an extra 1d6 damage of the type determined by its Draconic Essence