2 Level 2 Aqua monsters
Once per turn, during the Standby Phase: You can detach 1 material from this card; Special Summon 1 "Frog" monster from your Deck. Once per turn, when your opponent activates a Spell/Trap Card, or monster effect (Quick Effect): You can send 1 Aqua monster from your hand or face-up field to the GY; negate the activation, and if you do, destroy that card, then you can Set it to your field. If this card is sent to the GY: You can target 1 WATER monster in your GY; add it to your hand.