Bahamut Shark [ABYR-EN099] Secret Rare EVR044 you may play Rattle Bones

you may play Rattle Bones as though it were an instant

this card gains 500 ATK during the Damage Step only

otherwise choose 1 at random

Battleworn (If you defend with Barkbone Strapping

Set: Champion Pack 1 Card type: Effect Monster Rarity: Ultra Rare Attack: 0 Defense: 0 This card cannot be destroyed by battle with a Level 7 or lower monster

Bahamut Shark [ABYR-EN099] Secret Rare EVR044 you may play Rattle BonesSet: Abyss Rising Card type: Xyz Effect Monster Rarity: Secret Rare Attack: 2600 Defense: 2100 2 Level 4 WATER monsters. Once per turn: You can detach 1 Xyz Material from this card; Special Summon 1 Rank 3 or lower WATER Xyz Monster from your Extra Deck. this card cannot attack for the rest of this turn.