4 Merfolk Secretkeeper
1 Castle Vantress
2 Zagoth Triome
1 Watery Grave
2 Temple of Deceit
8 Swamp
8 Island
4 Overwhelmed Apprentice
2 Teferi's Tutelage
1 Castle Locthwain
1 Fabled Passage
1 Extinction Event
4 Ashiok, Dream Render
4 Underworld Dreams
2 Peer into the Abyss
4 Omen of the Sea
2 Tyrant's Scorn
2 Drown in the Loch
3 Thassa, Deep-Dwelling
4 Drowned Secrets