Gagaga Cowboy (CT10-EN010) [2013 Collectors Tins]

2 Level 4 monsters
<br>Once per turn: You can detach 1 Xyz Material from this card; apply this effect, depending on this card's battle position.
<br>• Attack Position: If this card attacks an opponent's monster this turn, it gains 1000 ATK and the opponent's monster loses 500 ATK, during the Damage Step only.
<br>• Defense Position: Inflict 800 damage to your opponent.