4 Choked Estuary
10 Island
4 Sunken Hollow
2 Swamp
4 Chemister's Insight
3 Discovery // Dispersal
4 Disinformation Campaign
4 Drowned Secrets
1 Ephara's Dispersal
4 Merfolk Secretkeeper // Venture Deeper
4 Notion Rain
4 Opt
4 Psychic Corrosion
4 Radical Idea
4 Thought Erasure
Sideboard:
1 Diamond Mare
1 Drown in the Loch
1 Glacial Grasp
4 Negate
1 Thought Collapse