1 Castle Vantress
15 Island
4 Nykthos, Shrine to Nyx
3 Brazen Borrower // Petty Theft
4 Gadwick, the Wizened
2 Glasspool Mimic // Glasspool Shore
3 Harbinger of the Tides
4 Leyline of Anticipation
4 Master of Waves
3 Merfolk Trickster
4 Mystic Reflection
4 Omen of the Sea
1 River's Rebuke
4 Spectral Sailor
1 Thassa, God of the Sea
3 Thassa's Oracle
Sideboard:
1 Aether Gust
1 Ashiok's Erasure
2 Callaphe, Beloved of the Sea
2 Cerulean Drake
3 Mystical Dispute
2 Negate
2 Spell Pierce
2 Wizard's Retort