20 Island
4 Nykthos, Shrine to Nyx
4 Gudul Lurker
4 Harbinger of the Tides
3 Hypnotic Siren
4 Master of Waves
3 Negate
3 Ordeal of Thassa
4 Shorecrasher Elemental
4 Stratus Dancer
4 Thassa, God of the Sea
3 Thassa's Rebuff
Sideboard:
3 Annul
2 Aqueous Form
2 Cloudform
2 Disdainful Stroke
2 Dissolve
2 Mirror Mockery
2 Polymorphist's Jest
2 Retraction Helix
2 Stratus Walk
2 Triton Tactics