1 Breeding Pool
1 Desert of the Indomitable
1 Desert of the Mindful
1 Flooded Grove
14 Forest
1 Gingerbread Cabin
1 Hedge Maze
12 Island
1 Lush Oasis
1 Mystic Sanctuary
1 Rejuvenating Springs
1 Rimewood Falls
1 Thornwood Falls
1 Tropical Island
1 Academy Manufactor
1 Annul
1 Bioessence Hydra
1 Biogenic Ooze
1 Biogenic Upgrade
1 Briar Hydra
1 Canopy Cover
1 Capricopian
1 Compulsion
1 Counterspell
1 Dreamdew Entrancer
1 Elusive Krasis
1 Feral Hydra
1 Gargos, Vicious Watcher
1 Giant Opportunity
1 Heroic Intervention
1 Hungering Hydra
1 Hydra Trainer
1 Hydra's Growth
1 Hydroid Krasis
1 Ice Cage
1 Invigorating Surge
1 Iridescent Hornbeetle
1 Jaheira, Friend of the Forest
1 Kalonian Hydra
1 Kasmina's Transmutation
1 Leadership Vacuum
1 Managorger Hydra
1 Many Partings
1 Mechanized Production
1 Mission Briefing
1 Mistcutter Hydra
1 Mysteries of the Deep
1 Night of the Sweets' Revenge
1 Nyxborn Hydra
1 Oko, Thief of Crowns
1 Oran-Rief Hydra
1 Overlord of the Hauntwoods
1 Ozolith, the Shattered Spire
1 Pawpatch Formation
1 Polymorph
1 Rampant Rejuvenator
1 Ramunap Hydra
1 Retreat to Coralhelm
1 Revive the Shire
1 Scourge of Skola Vale
1 Sharktocrab
1 Simic Ascendancy
1 Simic Signet
1 Sol Ring
1 Spineseeker Centipede
1 Steelbane Hydra
1 Tamiyo's Safekeeping
1 The Goose Mother
1 The Great Henge
1 The Ozolith
1 Thunderous Snapper
1 Tideforce Elemental
1 Voracious Hydra
1 Wildwood Scourge
1 Wolf's Quarry
1 Wren's Run Hydra
Sideboard:
1 Hydra Omnivore
1 Protean Hydra
1 Tireless Provisioner