4 Flooded Strand
1 Hallowed Fountain
2 Island
1 Minamo, School at Water's Edge
2 Mutavault
1 Oboro, Palace in the Clouds
1 Otawara, Soaring City
1 Steam Vents
3 Wanderwine Hub
4 Aether Vial
4 Benthic Biomancer
3 Curious Obsession
1 Deputy of Detention
2 Force of Negation
2 Glasspool Mimic // Glasspool Shore
2 Harbinger of the Tides
4 Harmonic Prodigy
1 Lord of Atlantis
4 Master of the Pearl Trident
4 Silvergill Adept
3 Svyelun of Sea and Sky
4 Tide Shaper
4 Unsettled Mariner
2 Vendilion Clique
Sideboard:
1 Cosi's Trickster