1 Castle Vantress
1 Cavern of Souls
1 Hall of Storm Giants
18 Island
1 Lonely Sandbar
1 Memorial to Genius
1 Minamo, School at Water's Edge
1 Mutavault
1 Mystic Sanctuary
1 Otawara, Soaring City
1 Rogue's Passage
1 Scalding Tarn
1 Scavenger Grounds
1 Seat of the Synod
1 Svyelunite Temple
1 Tolaria West
1 Abjure
1 Adaptive Automaton
1 Benthic Biomancer
1 Brineborn Cutthroat
1 Callaphe, Beloved of the Sea
1 Counterspell
1 Cursecatcher
1 Daze
1 Deeproot Waters
1 Deprive
1 Dispel
1 Familiar's Ruse
1 Foil
1 Glasspool Mimic // Glasspool Shore
1 Harbinger of the Tides
1 Herald's Horn
1 Icon of Ancestry
1 Kira, Great Glass-Spinner
1 Kopala, Warden of Waves
1 Lord of Atlantis
1 Lullmage Mentor
1 March of Swirling Mist
1 Master of the Pearl Trident
1 Master of Waves
1 Merfolk Sovereign
1 Merfolk Trickster
1 Merfolk Windrobber
1 Merrow Commerce
1 Merrow Harbinger
1 Merrow Reejerey
1 Misdirection
1 Mist-Cloaked Herald
1 Mystic Confluence
1 Mystic Reflection
1 Negate
1 Phantasmal Image
1 Pillar of Origins
1 Pongify
1 Rapid Hybridization
1 Reconnaissance Mission
1 Reflections of Littjara
1 Rishadan Dockhand
1 River Sneak
1 Sea Scryer
1 Sea's Claim
1 Seafloor Oracle
1 Silvergill Adept
1 Sol Ring
1 Spell Pierce
1 Spreading Seas
1 Stonybrook Banneret
1 Subtlety
1 Suspend
1 Svyelun of Sea and Sky
1 Teferi's Veil
1 Tempest Caller
1 Thassa, God of the Sea
1 Thassa's Intervention
1 Thieving Skydiver
1 Thwart
1 Tidal Courier
1 Tide Shaper
1 Tideshaper Mystic
1 Triton Shorestalker
1 True-Name Nemesis
1 Wake Thrasher
1 Wayfarer's Bauble
Sideboard:
1 Archmage's Charm
1 Coat of Arms
1 Commandeer
1 Cryptic Command
1 Force of Negation
1 Force of Will
1 Kindred Discovery
1 Metallic Mimic
1 Rhystic Study
1 Sapphire Medallion
1 Vanquisher's Banner