Sirènemure Néréidabysses MP18-FR118

(Quick Effect): You can discard this card, then target 1 WATER monster you control. Destroy 1 other WATER monster in your hand or on your field, and if you do, the targeted monster gains ATK/DEF equal to the original ATK/DEF of the destroyed monster, until the end of this turn. If this card is sent from the field to the GY: You can draw 1 card, then discard 1 card. You can only use each effect of "Marincess Marbled Rock" once per turn.