Guardian Baou (DR1-EN170) [Dark Revelation Volume 1]

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 1 of your opponent''s monster is destroyed and sent to the Graveyard in battle by this monster, increase the ATK of this card by 1000 points. Also negate the effect of an Effect Monster that is destroyed by this monster in battle.