1 Academy Ruins
1 Arcane Lighthouse
1 Halimar Depths
1 Homeward Path
24 Island
1 Minamo, School at Water's Edge
1 Myriad Landscape
1 Nykthos, Shrine to Nyx
1 Reliquary Tower
1 Temple of the False God
1 Terrain Generator
1 Tolaria West
1 Aboshan, Cephalid Emperor
1 Aetherize
1 Bident of Thassa
1 Blue Sun's Zenith
1 Braids, Conjurer Adept
1 Brainstorm
1 Caged Sun
1 Capsize
1 Chasm Skulker
1 Coastal Piracy
1 Colossal Whale
1 Counterspell
1 Crush of Tentacles
1 Cyclonic Rift
1 Darksteel Forge
1 Deadeye Navigator
1 Devastation Tide
1 Dig Through Time
1 Distorting Wake
1 Dizzy Spell
1 Draining Whelk
1 Expedition Map
1 Extraplanar Lens
1 Flow of Ideas
1 Gauntlet of Power
1 Gilded Lotus
1 Great Whale
1 High Tide
1 Inkwell Leviathan
1 Kederekt Leviathan
1 Lorthos, the Tidemaker
1 Mind Stone
1 Mystic Confluence
1 Mystic Remora
1 Overwhelming Denial
1 Ponder
1 Preordain
1 Quest for Ula's Temple
1 Quicksilver Amulet
1 Reef Worm
1 Rhystic Study
1 Riptide Shapeshifter
1 Sapphire Medallion
1 Scourge of Fleets
1 Sensei's Divining Top
1 Shipbreaker Kraken
1 Sol Ring
1 Stormsurge Kraken
1 Stormtide Leviathan
1 Swiftfoot Boots
1 Tamiyo, the Moon Sage
1 Teferi, Temporal Archmage
1 Tezzeret the Seeker
1 Thada Adel, Acquisitor
1 Thassa, God of the Sea
1 Thing in the Ice // Awoken Horror
1 Thran Dynamo
1 Tidespout Tyrant
1 Treasure Cruise
1 Tromokratis
1 Turnabout
1 Vedalken Orrery
1 Wash Out
1 Whelming Wave
1 Worn Powerstone
Sideboard:
1 Arcane Denial
1 Archetype of Imagination
1 Deep-Sea Kraken
1 Dismiss
1 Displacement Wave
1 Engulf the Shore
1 Flow of Ideas
1 Future Sight
1 Guard Gomazoa
1 Inundate
1 Man-o'-War
1 Pearl Lake Ancient
1 Pull from the Deep
1 Quicksilver Fountain
1 Tidal Kraken