Main deck (60) 4 Aether Vial 4 Benthic Biomancer 3 Harbinger of the Tides 15 Island 4 Lord of Atlantis 4 Master of the Pearl Trident 4 Master of Waves 4 Merfolk Trickster 4 Mutavault 1 Oboro, Palace in the Clouds 4 Silvergill Adept 4 Spreading Seas 2 Vendilion Clique 3 Wizard's Retort Sideboard (15) 3 Ceremonious Rejection 2 Dismember 2 Echoing Truth 4 Relic of Progenitus 2 Tectonic Edge 2 Tidebinder Mage