22 Island
4 Brineborn Cutthroat
3 Crashing Tide
4 Dive Down
3 Harbinger of the Tides
4 Merfolk Trickster
3 Seafloor Oracle
4 Silvergill Adept
2 Sleep
3 Spell Pierce
4 Tempest Djinn
4 Wizard's Retort
Sideboard:
3 Tidebinder Mage
3 Watertrap Weaver