2 Mutavault 21 Island 4 Harbinger of the Tides 2 Thassa, God of the Sea 2 Gadwick, the Wizened 4 Wizard's Retort 1 Spell Pierce 4 Merfolk Trickster 4 Siren Stormtamer 4 Cloudfin Raptor 4 Master of Waves 4 Tempest Djinn 4 Curious Obsession Sideboard 2 Sorcerous Spyglass 3 Cerulean Drake 2 Take into Custody 3 Entrancing Melody 4 Negate 1 Spell Pierce