Main deck (61)
4 Brineborn Cutthroat
4 Curious Obsession
2 Dive Down
3 Essence Capture
20 Island
4 Merfolk Trickster
4 Opt
2 Sea-Dasher Octopus
4 Siren Stormtamer
4 Spectral Sailor
2 Spell Pierce
4 Tempest Djinn
4 Unsubstantiate

Sideboard (15)
3 Aether Gust
2 Aetherize
2 Cerulean Drake
3 Entrancing Melody
3 Mystical Dispute
2 Tidebinder Mage