Polymorph, Greater (Black Dragonkind)

The target creature becomes a medium dragon-like creature. It gains a +4 size bonus to Strength, a +2 size bonus to Constitution, a +4 form natural armor bonus to AC, immunity to difficult terrain, and resistance to acid 20. Its movement speed is increased by 10 feet. It also gain one bite (1d8), two claws (1d6), two wing attacks (1d4), and a breath weapon ability. The subject may choose to resume its normal form as a full-round action; doing so ends the spell for that subject. Breath Weapon: Your breath weapon deals 6d8 points of acid damage in a 60-foot line and allows a Reflex save for half damage. You can only use the breath weapon once per casting of this spell.