This card can only be Ritual Summoned with the Ritual Spell Card "Tides of Celestial Rite." When this card is Ritual Summoned: You can target up to 2 cards your opponent controls; return them to the hand. Once per turn (Quick Effect): You can banish 1 WATER monster from your GY, then target 1 face-up monster your opponent controls; negate its effects until the end of this turn. If this card would be destroyed by battle or card effect, you can shuffle 1 WATER monster from your GY into the Deck instead.