Guardian Baou (LCYW-EN132) - Legendary Collection 3: Yugi's World 1st Edition

This card can only be Normal Summoned, Flip Summoned, or Special Summoned when there is a "Wicked-Breaking Flamberge - Baou" on your side of the field. Each time this card destroys 1 of your opponent's monsters and sends it to the Graveyard as a result of battle, increase the ATK of this card by 1000 points. Also, the effects of an Effect Monster that this card destroys as a result of battle are negated.