20 Forest
20 Island
1 Aquatic Incursion
1 Cenote Scout
1 Courage in Crisis
1 Court of Bounty
1 Deepfathom Echo
1 Deeproot Elite
1 Deeproot Pilgrimage
1 Eaten by Piranhas
1 Emperor Mihail II
1 Energy Vortex
1 Entrancing Melody
1 Explorer's Cache
1 Forerunner of the Heralds
1 Hadana's Climb // Winged Temple of Orazca
1 Hakbal of the Surging Soul
1 Harbinger of the Seas
1 Herald of Secret Streams
1 Hullbreacher
1 Jadelight Spelunker
1 Kiora, Behemoth Beckoner
1 Kiora, Master of the Depths
1 Kiora's Follower
1 Kopala, Warden of Waves
1 Kumena, Tyrant of Orazca
1 Lodestone Needle // Guidestone Compass
1 Malamet Battle Glyph
1 Merfolk Cave-Diver
1 Merfolk Skydiver
1 Merfolk Sovereign
1 Mist Dancer
1 Mist-Cloaked Herald
1 Mistcaller
1 Neoform
1 Nicanzil, Current Conductor
1 Open into Wonder
1 Out of Air
1 Over the Edge
1 Prime Speaker Zegana
1 River Sneak
1 River's Rebuke
1 Seafloor Oracle
1 Seasinger
1 Seeker of Sunlight
1 Silvergill Douser
1 Simic Ascendancy
1 Slinn Voda, the Rising Deep
1 Subterranean Schooner
1 Svyelun of Sea and Sky
1 Swashbuckler's Whip
1 Thassa, God of the Sea
1 Tishana, Voice of Thunder
1 Tishana's Tidebinder
1 Topography Tracker
1 Tributary Instructor
1 Vanquisher's Banner
1 Vodalian Hexcatcher
1 Vodalian Mage
1 Vorel of the Hull Clade
1 Waterwind Scout
1 Zegana, Utopian Speaker
Sideboard:
1 River Herald Guide
1 Shapers of Nature
1 Vodalian Mindsinger