20 Forest
1 Lair of the Hydra
1 Arbor Elf
1 Aspect of Hydra
1 Benevolent Hydra
1 Devoted Druid
1 Devouring Tendrils
1 Elvish Archdruid
1 Elvish Mystic
1 Exponential Growth
1 Fyndhorn Elves
1 Gargos, Vicious Watcher
1 Hooded Hydra
1 Hungering Hydra
1 Hydra Broodmaster
1 Hydra Trainer
1 Invigorating Surge
1 Joraga Treespeaker
1 Kalonian Hydra
1 Llanowar Elves
1 Llanowar Loamspeaker
1 Llanowar Tribe
1 Llanowar Visionary
1 Monstrous Onslaught
1 Neverwinter Hydra
1 Nissa, Who Shakes the World
1 Nissa's Pilgrimage
1 Nissa's Triumph
1 Nyxborn Hydra
1 Oran-Rief Hydra
1 Priest of Titania
1 Primordial Hydra
1 Protean Hydra
1 Steelbane Hydra
1 Turntimber Symbiosis // Turntimber, Serpentine Wood
1 Unbound Flourishing
1 Vastwood Hydra
1 Voracious Hydra
1 Whiptongue Hydra
1 Wildborn Preserver
1 Wren's Run Hydra
Sideboard:
1 Animist's Awakening
1 Belt of Giant Strength
1 Canopy Tactician
1 Cultivate
1 Elven Bow
1 Engulfing Slagwurm
1 Feral Hydra
2 Forest
1 Garruk Wildspeaker
1 Genesis Hydra
1 Greenweaver Druid
1 Harrow
1 Heroes' Bane
1 Hydra's Growth
1 Impervious Greatwurm
1 Incubation Druid
1 Ironscale Hydra
1 Khalni Hydra
1 Marwyn, the Nurturer
1 Mul Daya Channelers
1 Nature's Lore
1 Nissa, Worldwaker
1 Nissa's Renewal
1 Nykthos, Shrine to Nyx
1 Oran-Rief, the Vastwood
1 Overgrowth
1 Paradise Druid
1 Plated Slagwurm
1 Reclamation Sage
1 Steel Leaf Champion
1 Utopia Sprawl
1 Verdant Mastery
1 Vines of Vastwood
1 Wild Growth
1 Wood Elves
1 Worldspine Wurm