Xyz Double Back [Cosmo Blazer] [CBLZ-EN056]

Set: Cosmo Blazer Card type: Spell Card Rarity: Common If you control no monsters and an Xyz Monster you control was destroyed this turn: Target 1 Xyz Monster in your Graveyard that was destroyed this turn and 1 other monster in your Graveyard whose ATK is less than or equal to the ATK of the destroyed monster; Special Summon those targets. Destroy them during the End Phase.