25 Island
2 Aquitect's Will
1 Banshee's Blade
1 Bident of Thassa
2 Boomerang
1 Chasm Skulker
1 Coastal Piracy
1 Coat of Arms
1 Cold-Eyed Selkie
2 Curiosity
1 Dakra Mystic
4 Deeptread Merrow
1 Ghastlord of Fugue
1 Grayscaled Gharial
1 Gudul Lurker
1 Jinx
1 Keep Watch
1 Merrow Harbinger
1 Merrow Reejerey
1 Mistblade Shinobi
1 Mystic Speculation
3 Prodigal Sorcerer
1 Reef Shaman
1 Rootwater Commando
1 Rootwater Hunter
1 Stonybrook Banneret
1 Strata Scythe
1 Tideshaper Mystic
1 Triton Shorestalker
1 Unsummon
2 Vapor Snag
Sideboard:
3 Coral Barrier
3 Coral Trickster
1 Cursecatcher
2 Grayscaled Gharial
3 Harbor Serpent
1 Inkfathom Divers
2 Into the Flood Maw
1 Merfolk Thaumaturgist
1 Mistblade Shinobi
1 Sea's Claim
2 Squid
1 Sunken City
1 The Key to the Vault
1 Tideshaper Mystic
2 Trespassing Souleater
2 Unstable Mutation
3 Unsummon
1 Wipe Away