Main deck (60) 4 Aether Vial 2 Brazen Borrower 2 Cavern of Souls 4 Dismember 4 Harbinger of the Tides 9 Island 4 Lord of Atlantis 4 Master of the Pearl Trident 4 Merfolk Trickster 3 Merrow Reejerey 1 Minamo, School at Water's Edge 4 Mutavault 1 Oboro, Palace in the Clouds 4 Silvergill Adept 4 Svyelun of Sea and Sky 4 Tide Shaper 2 Waterlogged Grove Sideboard (15) 3 Chalice of the Void 3 Counterspell 4 Force of Negation 3 Relic of Progenitus 2 Spreading Seas