Tiras, Keeper of Genesis

Level 5 LIGHT/Fairy Xyz Effect
2600 ATK / 1700 DEF

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.

Rulings – Yugipedia

Printings:

Generation Force: GENF-EN044 (Secret Rare) - 2011-08-16
Battle Pack: Epic Dawn: BP01-EN029 (Rare) - 2012-05-24
Battle Pack: Epic Dawn: BP01-EN029 (Starfoil Rare) - 2012-05-24

Prices:

Cardmarket: 4.05 €
TCGplayer: $ 10.53