20 Island
1 Soldevi Excavations
1 Strip Mine
4 Boomerang
1 Brainstorm
3 Cold-Eyed Selkie
1 Colossal Whale
4 Deep-Sea Kraken
2 Ghastlord of Fugue
1 Inkwell Leviathan
4 Invisible Stalker
4 Magical Hack
2 Merfolk Spy
4 Mind Bend
3 Phantom Warrior
3 Psychic Venom
4 Sea's Claim
4 Spreading Seas
Sideboard:
2 Chasm Skulker
4 Covert Operative
1 Curiosity
4 Grayscaled Gharial
2 Honden of Seeing Winds
4 Inkfathom Infiltrator
4 Manta Ray
1 Mist-Cloaked Herald
3 Pirate Ship
2 Political Trickery
4 Quicksilver Fountain
2 Stormtide Leviathan
2 Thada Adel, Acquisitor
2 Vedalken Shackles