You can target 1 face-up card your opponent controls; destroy 1 Icejade monster you control, and if you do, negate the targeted card s effects until the end of this turn. If a face-up WATER monster you control leaves the field by an opponent s card, except by being destroyed (and except during the Damage Step): You can add to your hand or Special Summon, 1 Icejade monster from your Deck. You can only use each effect of Icejade Erosion once per turn.