You can only use the 2nd effect of this card’s name once per turn.
(1) When an attack is declared involving an opponent’s monster: Change that opponent’s monster’s ATK to 0, its battle position cannot be changed, also its effects are negated.
(2) You can banish this card from your GY; you cannot Special Summon monsters until the end of your next turn, except WATER monsters, also send 1 Level 5 or higher WATER monster from your Deck to the GY, then you can add 1 WATER monster from your GY to your hand.