Xyz Territory

Field Spell

When an Xyz Monster battles another monster, that Xyz Monster gains 200 ATK & DEF x its Rank, during damage calculation only. If this face-up card on the field would be destroyed by a card effect, you can detach 1 Xyz Material from a monster you control instead.

Rulings – Yugipedia

Printings:

Photon Shockwave: PHSW-EN088 (Rare) - 2011-11-10

Prices:

Cardmarket: 0.20 €
TCGplayer: $ 0.33