Since GP Manchester's coming up and I'll hopefully be able to go I figured best to start preparing now. JOU was very nice to this deck giving it two playable 1-drops that really help it get off the ground. It's still a little awkward in what it essentially forces you to play and there's an argument to be said that Sphinx should be in the main, but this is what I'll be testing initially. Also it's totally possible, and possibly likely, that the Fated Infatuations should be 2 more Voyage's End or 2 Dissolves.
Creatures:
4 Triton Shorestalker
4 Hypnotic Siren
4 Mindreaver
4 Vaporkin
4 Omenspeaker
4 Thassa, God of the Sea
4 Master of Waves
Artifacts:
3 Bident of Thassa
1 Hall of Triumph
Instants:
2 Voyage's End
2 Fated Infatuation
Lands:
3 Nykthos, Shrine to Nyx
21 Island
Sideboard:
2 Dissolve
4 Gainsay
4 Prognostic Sphinx
3 Dictate of Kruphix
2 Triton Tactics
Creatures:
4 Triton Shorestalker
4 Hypnotic Siren
4 Mindreaver
4 Vaporkin
4 Omenspeaker
4 Thassa, God of the Sea
4 Master of Waves
Artifacts:
3 Bident of Thassa
1 Hall of Triumph
Instants:
2 Voyage's End
2 Fated Infatuation
Lands:
3 Nykthos, Shrine to Nyx
21 Island
Sideboard:
2 Dissolve
4 Gainsay
4 Prognostic Sphinx
3 Dictate of Kruphix
2 Triton Tactics