Main deck (60) 4 Aether Vial 3 Harbinger of the Tides 15 Island 4 Lord of Atlantis 4 Master of the Pearl Trident 4 Master of Waves 3 Merfolk Trickster 4 Merrow Reejerey 4 Mistcaller 4 Mutavault 1 Oboro, Palace in the Clouds 4 Silvergill Adept 2 Spell Pierce 4 Spreading Seas Sideboard (15) 4 Deprive 3 Gut Shot 4 Surgical Extraction 2 Tectonic Edge 2 Venser, Shaper Savant