Cutter Shark

When a card or effect is activated that targets 1 monster you control (and no other cards) or when a monster you control is targeted for an attack, while this card is in your hand or GY (Quick Effect): You can Tribute that monster; Special Summon this card. If this card is Special Summoned: You can activate this effect; during the End Phase of this turn, add 1 WATER monster from your GY to your hand, except "Cutter Shark". You can only use each effect of "Cutter Shark" once per turn.