1 Aspect of Hydra (BNG) 117
1 Beast Within (EOC) 93
1 Cultivate (M21) 177
1 Domesticated Hydra (CN2) 63
1 Doubling Season (FDN) 216
1 Elemental Bond (C17) 148
1 Extraplanar Lens (MRD) 169
1 Feral Hydra (BBD) 197
1 Gargos, Vicious Watcher (M20) 172
1 Genesis Hydra (IMA) 163
1 Gilded Lotus (M13) 206
1 Hardened Scales (FIC) 307
1 Harrow (ZEN) 165
1 Herald's Horn (C17) 53
1 Heroes' Bane (JOU) 126
1 Honored Hydra (AKH) 172
1 Hungering Hydra (M19) 189
1 Hunter's Insight (M12) 180
1 Hydra Broodmaster (JOU) 128
1 Hydra Omnivore (C18) 153
1 Inspiring Call (FDN) 226
1 Kalonian Hydra (CM2) 140
1 Karametra's Acolyte (PMEI) 78
1 Khalni Hydra (ROE) 192
1 Kodama's Reach (MMA) 151
1 Lifeblood Hydra (CMA) 124
1 Lifecrafter's Bestiary (AER) 162
1 Lignify (PLIST) 16
1 Managorger Hydra (ORI) 186
1 Mistcutter Hydra (THS) 162
1 Nissa, Who Shakes the World (WAR) 169
1 Nissa's Pilgrimage (FNMP) 188
1 Nykthos, Shrine to Nyx (THS) 223
1 Nylea, God of the Hunt (THS) 166
1 Omnath, Locus of Mana (WWK) 109
1 Oran-Rief Hydra (DDR) 16
1 Phyrexian Hydra (MBS) 85
1 Pir, Imaginative Rascal (BBD) 11
1 Polukranos, World Eater (DDL) 43
1 Primordial Hydra (M13) 183
1 Protean Hydra (M11) 194
1 Rishkar's Expertise (AER) 123
1 Selvala, Heart of the Wilds (CN2) 70
1 Skyreaping (BNG) 140
1 Skyshroud Claim (NE) 117
35 Snow-Covered Forest (MH1) 254
1 Sol Ring (ECC) 58
1 Solidarity of Heroes (JOU) 141
1 Song of the Dryads (CMA) 147
1 Soul's Majesty (CON) 92
1 Temple of the False God (CM2) 271
1 Thought Vessel (FIC) 368
1 Thran Dynamo (BLC) 290
1 Ulvenwald Hydra (SOI) 235
1 Unbound Flourishing (MH1) 189
1 Uncage the Menagerie (HOU) 137
1 Urza's Incubator (CG) 142
1 Vanquisher's Banner (XLN) 251
1 Vastwood Hydra (M14) 198
1 Vivien of the Arkbow (M19) 301
1 Vivien Reid (M19) 208
1 Vivien, Arkbow Ranger (M20) 199
1 Vivien, Nature's Avenger (M20) 298
1 Voracious Hydra (M20) 200
1 Whiptongue Hydra (C18) 36
1 Zendikar Resurgent (OGW) 147