20 Island
4 Mutavault
4 Brazen Borrower // Petty Theft
4 Harbinger of the Tides
4 Master of Waves
4 Merfolk Trickster
4 Siren Stormtamer
4 Tempest Djinn
4 Thassa, God of the Sea
Sideboard:
4 Negate
3 Sorcerous Spyglass
4 Spell Pierce
4 Tidebinder Mage