1 Castle Vantress
1 Cephalid Coliseum
1 Coral Atoll
1 Faerie Conclave
1 Hall of Storm Giants
26 Island
1 Moonring Island
1 Mystic Sanctuary
1 Nykthos, Shrine to Nyx
1 Otawara, Soaring City
1 Soldevi Excavations
1 Teferi's Isle
1 Abjure
1 Azami, Lady of Scrolls
1 Blue Mana Battery
1 Breaching Leviathan
1 Callaphe, Beloved of the Sea
1 Cavalier of Gales
1 Charix, the Raging Isle
1 Coral Reef
1 Counterbalance
1 Cryptic Command
1 Defiler of Dreams
1 Demilich
1 Eluge, the Shoreless Sea
1 Engulf the Shore
1 Eye of Ramos
1 Flooded Shoreline
1 Floodgate
1 Flow of Knowledge
1 Future Sight
1 Gadwick, the Wizened
1 Guile
1 Harbinger of the Seas
1 Harbinger of the Tides
1 High Tide
1 Homarid Spawning Bed
1 In Too Deep
1 Inundate
1 Magus of the Future
1 Master of Waves
1 Merfolk Trickster
1 Midnight Clock
1 Myojin of Cryptic Dreams
1 Paragon of Gathering Mists
1 Puppet Master
1 Quicksilver Fountain
1 Reality Twist
1 Scourge of Fleets
1 Seasinger
1 Shorecrasher Elemental
1 Silent Submersible
1 Sky Diamond
1 Sol Ring
1 Spectral Deluge
1 Spell Syphon
1 Sphinx of Magosi
1 Stormtide Leviathan
1 Subtlety
1 Sunken City
1 Surge Mare
1 Teferi, Mage of Zhalfir
1 Tempest Djinn
1 Thassa, Deep-Dwelling
1 Thassa, God of the Sea
1 Thassa's Oracle
1 Thassa's Rebuff
1 The Flood of Mars
1 Threnody Singer
1 Throne of Eldraine
1 Tidebinder Mage
1 Unctus, Grand Metatect
1 Vedalken Mastermind
1 Vedalken Shackles
1 Wonder
Sideboard:
1 Altar of the Pantheon
1 Amphibian Downpour
1 Clone Legion
1 Deepchannel Mentor
1 Escape Detection
1 Invoke Prejudice
1 Mnemonic Deluge
1 Quicksilver Elemental
1 Sanity Grinding
1 Sorcerous Squall
1 Tezzeret's Gatebreaker