Battlin' Boxer Counterpunch

Level 3 FIRE/Warrior Effect Monster
0 ATK / 1100 DEF

During the Damage Step of either player's turn, when a "Battlin' Boxer" monster you control is attacking or being attacked: You can banish this card from your hand or Graveyard; that monster gains 1000 ATK, until the end of this turn. You can only use the effect of "Battlin' Boxer Counterpunch" once per turn.

Rulings – Yugipedia

Printings:

Lord of the Tachyon Galaxy: LTGY-EN020 (Common) - 2013-05-17
2014 Mega-Tin Mega Pack: MP14-EN006 (Common) - 2014-08-28

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.32