1 Branching Evolution
1 Capricopian
1 Doubling Season
1 Gargos, Vicious Watcher
1 Genesis Hydra
1 Grakmaw, Skyclave Ravager
1 Hardened Scales
1 Haunting Voyage
1 Hooded Hydra
1 Hungering Hydra
1 Hydradoodle
1 Hydroid Krasis
1 Kalonian Hydra
1 Kindred Discovery
1 Kindred Dominance
1 Lifeblood Hydra
1 Mistcutter Hydra
1 Neverwinter Hydra
1 Polukranos, Unchained
1 Primal Vigor
1 Primordial Hydra
1 Steelbane Hydra
1 Unbound Flourishing
1 Urza's Incubator
1 Vastwood Hydra
1 Voracious Hydra
1 Zaxara, the Exemplary
Sideboard:
1 Rampant Rejuvenator
1 Stumpsquall Hydra
1 Thunderous Snapper
1 Wren's Run Hydra