Tiras, Keeper of Genesis - GENF-EN044 Secret Rare Unlimited

2 Level 5 monsters This card's effects can only be applied/resolved while it has Xyz Material. This card cannot be destroyed by card effects. At the end of the Battle Phase, if this card attacked or was attacked: Target 1 card your opponent controls; destroy that target. During each of your End Phases: Detach 1 Xyz Material from this card.