When this card destroys an opponent's monster by battle and sends it to the Graveyard: Roll a six-sided die and apply the result. 1: Inflict damage to your opponent equal to half the ATK of the destroyed monster in the Graveyard. 2: Target 1 "Aquatack" monster in your Graveyard, except "Aquattack Harpooner"; apply that card's effect as if you rolled 2 by that card's effect. 3: This card gains 800 ATK, until the end of this turn. 4: Target 1 monster your opponent controls; take control of it, but destroy it during the End Phase. 5: Banish the top card of your opponent's Deck, face-down. 6: Apply 1 of the above effects.