Main deck (60) 4 Aether Vial 3 Cavern of Souls 3 Dismember 3 Force of Negation 9 Island 4 Lord of Atlantis 4 Master of the Pearl Trident 4 Merfolk Trickster 1 Minamo, School at Water's Edge 2 Mistcaller 4 Mutavault 1 Oboro, Palace in the Clouds 1 Otawara, Soaring City 3 Silvergill Adept 1 Spreading Seas 4 Svyelun of Sea and Sky 4 Tide Shaper 4 Vodalian Hexcatcher 1 Waterlogged Grove Sideboard (15) 3 Chalice of the Void 1 Dismember 1 Force of Negation 1 Grafdigger's Cage 2 Harbinger of the Tides 2 Orvar, the All-Form 1 Relic of Progenitus 1 Silvergill Adept 1 Spreading Seas 2 Subtlety