Once per turn, during either player's turn, when another monster's effect is activated: You can negate the activation, and if you do, destroy it, and if you do that, this card gains ATK equal to the destroyed monster's original ATK until the end of this turn. Once per battle, if this card battles an opponent's Level 5 or higher monster, during damage calculation (in either player's turn): This card gains ATK equal to the ATK of the opponent's battling monster, during damage calculation only.