20 Island
4 Mutavault
2 Adaptive Automaton
3 Coat of Arms
3 Confound
2 Cyclonic Rift
2 Drift of Phantasms
1 Frozen Aether
4 High Tide
2 Obelisk of Urd
4 Preordain
4 Sigiled Starfish
4 Spiny Starfish
1 Thassa, God of the Sea
4 Vapor Snag
Sideboard:
1 Aether Barrier
1 Gush