About Name Merfolk tapryne Deck 3 Bad River 4 Deeproot Waters 3 Flood Plain 9 Island 2 Kopala, Warden of Waves 4 Lonely Sandbar 3 Lullmage Mentor 2 Memorial to Genius 4 Merfolk Sovereign 4 Psychic Barrier 4 Riptide Pilferer 4 Sage's Dousing 4 Silvergill Adept 4 Stonybrook Banneret 3 Supreme Will 3 Think Twice Sideboard 3 Annul 3 Chill 3 Repeal 4 Sentinel Totem 2 Thada Adel, Acquisitor