1 Castle Vantress
1 Emergence Zone
23 Island
1 Mystic Sanctuary
1 Reliquary Tower
1 Aquitect's Will
1 Arcane Signet
1 Bident of Thassa
1 Blue Sun's Zenith
1 Brainstorm
1 Confounding Conundrum
1 Coralhelm Commander
1 Counterspell
1 Cursecatcher
1 Cyclonic Rift
1 Deepchannel Mentor
1 Deeproot Waters
1 Disallow
1 Dispel
1 Distant Melody
1 Dramatic Reversal
1 Expropriate
1 Fatespinner
1 Harbinger of the Tides
1 Isochron Scepter
1 Jace, Wielder of Mysteries
1 Karn's Temporal Sundering
1 Kopala, Warden of Waves
1 Library Larcenist
1 Lord of Atlantis
1 Lullmage Mentor
1 Mana Drain
1 Mantle of Tides
1 Master of the Pearl Trident
1 Merfolk Sovereign
1 Merfolk Trickster
1 Merrow Commerce
1 Merrow Harbinger
1 Merrow Reejerey
1 Mind Stone
1 Mystic Remora
1 Mystical Tutor
1 Narset, Parter of Veils
1 Narset's Reversal
1 Negate
1 Nexus of Fate
1 Opt
1 Part the Waterveil
1 Pongify
1 Rapid Hybridization
1 Reality Shift
1 Reconnaissance Mission
1 Reflections of Littjara
1 Rhystic Study
1 Rishadan Dockhand
1 Rootwater Thief
1 Saw It Coming
1 Seafloor Oracle
1 Seahunter
1 Silvergill Adept
1 Sol Ring
1 Solemn Simulacrum
1 Solve the Equation
1 Stonybrook Banneret
1 Streambed Aquitects
1 Sublime Epiphany
1 Suspend
1 Svyelun of Sea and Sky
1 Teferi, Master of Time
1 Telepathy
1 Temporal Mastery
1 Temporal Trespass
1 Thada Adel, Acquisitor
1 Thassa, God of the Sea
1 Thassa's Oracle
1 Thassa's Rebuff
1 Thieving Skydiver
1 Thought Vessel
1 Tidal Courier
1 Tide Shaper
1 Triskaidekaphile
1 Wanderwine Prophets
1 Waterspout Weavers
Sideboard:
1 Aquatic Incursion
1 Back to Basics
1 Burnished Hart
1 Coastal Piracy
1 Commander's Sphere
1 Empress Galina
1 Fallowsage
1 Familiar's Ruse
1 Fatespinner
1 Imprisoned in the Moon
1 Kindred Discovery
1 Leyline of Anticipation
1 Lightning Greaves
1 Master of Waves
1 Scourge of Fleets
1 Stormtide Leviathan
1 Surgespanner
1 Swiftfoot Boots
1 Sword of the Animist
1 Tempest Caller
1 True-Name Nemesis
1 Wizard Class