Main deck (60) 4 Aether Vial 3 Cavern of Souls 1 Fiery Islet 4 Force of Negation 9 Island 4 Lord of Atlantis 4 Master of the Pearl Trident 4 Merrow Reejerey 4 Mutavault 1 Oboro, Palace in the Clouds 4 Rishadan Dockhand 4 Silvergill Adept 4 Spreading Seas 4 Svyelun of Sea and Sky 4 Tide Shaper 2 Waterlogged Grove Sideboard (15) 4 Counterspell 3 Dismember 3 Grafdigger's Cage 2 Harbinger of the Tides 2 Merfolk Trickster 1 Relic of Progenitus