Gorgonic Guardian

Level 3 DARK/Rock Xyz Effect
1600 ATK / 1200 DEF

2 Level 3 Rock-Type monsters
Once per turn, during either player's turn: You can detach 1 Xyz Material from this card, then target 1 face-up monster your opponent controls; its ATK becomes 0, and if it does, its effects are negated. These effects last until the end of this turn. Once per turn: You can target 1 monster on the field with 0 ATK; destroy it.

Rulings – Yugipedia

Printings:

Legacy of the Valiant: LVAL-EN051 (Common) - 2014-01-24
2014 Mega-Tin Mega Pack: MP14-EN220 (Common) - 2014-08-28

Prices:

Cardmarket: 0.19 €
TCGplayer: $ 0.25