#Commander:
The Goose Mother (woe) 204 #top10k #Flying #Food
#Creature (49):
Primordial Hydra
(m12) 189 #top10k
Khalni Hydra
(roe) 192 #Trample
Protean Hydra
(m10) 200 #top10k
Honored Hydra
(akh) 172 #Trample #Embalm
Ulvenwald Hydra
(soi) 235 #top10k #Reach
Briar Hydra
(dmu) 286 #Trample #Domain
Rampant Rejuvenator
(nec) 28 #top10k
Whiptongue Hydra
(c18) 36 #top10k #Reach
Hooded Hydra
(ktk) 136 #top10k #Morph
Stumpsquall Hydra
(cmr) 367
Rampaging Aetherhood
(drc) 15 #Trample #Ward
Mossborn Hydra
(fdn) 107 #top10k #Trample #Landfall
Feral Hydra
(ala) 131 #top10k
Neverwinter Hydra
(afc) 310 #top10k #Trample #Ward
Sprouting Phytohydra
(dis) 95 #Defender
Clockwork Hydra
(tsp) 253
Warden of the Grove
(tdm) 166 #NEW
Hydra Omnivore
(cmd) 161 #top10k
Hydra Broodmaster
(jou) 128 #top10k #Monstrosity
Domesticated Hydra
(cn2) 63 #Monstrosity
Wildwood Scourge
(m21) 214 #top10k
Hungering Hydra
(m19) 189 #top10k
Hydroid Krasis
(rna) 183 #top10k #Flying #Trample
Bristling Hydra
(kld) 147
Ramunap Hydra
(hou) 130 #Reach #Vigilance #Trample
Wren's Run Hydra
(mh2) 183 #top10k #Reach #Reinforce
Benevolent Hydra
(j22) 38 #top10k
Oran-Rief Hydra
(pbfz) 181 #top10k #Trample #Landfall
Phyrexian Hydra
(mbs) 85 #Infect
Ironscale Hydra
(thb) 296 #top10k
Nessian Wilds Ravager
(pbng) 129★ #Fight #Tribute
Bioessence Hydra
(war) 186 #Trample
Thunderous Snapper
(eld) 215 #top10k
Genesis Hydra
(m15) 176 #top10k
Goldvein Hydra
(otj) 167 #top10k #Vigilance #Treasure #Haste #Trample
Nyxborn Hydra
(mh3) 164 #top10k #Reach #Trample #Bestow
Heroes' Bane
(pjou) 126★ #top10k
Capricopian
(c20) 58 #top10k
Mistcutter Hydra
(ths) 162 #top10k #Protection #Haste
Kalonian Hydra
(m14) 181 #top10k #Trample
Scourge of Skola Vale
(bng) 137 #Trample
Polukranos, World Eater
(ddl) 43 #top10k #Monstrosity
Gargos, Vicious Watcher
(m20) 172 #top10k #Vigilance #Fight
Apex Devastator
(cmr) 217 #top10k #Cascade
Voracious Hydra
(m20) 200 #top10k #Trample #Fight
Vastwood Hydra
(m14) 198 #top10k
Managorger Hydra
(ori) 186 #top1k #Trample
Steelbane Hydra
(eld) 322 #top10k
Lifeblood Hydra
(c14) 45 #top10k #Trample
#Changelings (41):
Formless Genesis
(dsc) 34 #top10k #Retrace #Changeling
Arachnoform
(khm) 159 #Enchant
Bloodline Pretender
(khm) 235 #top10k #Changeling
Game-Trail Changeling
(mor) 123 #Trample #Changeling
Mistform Skyreaver
(ons) 97 #Flying
Mothdust Changeling
(mor) 42 #top10k #Changeling
Maskwood Nexus
(khm) 240 #top1k
Three Tree Mascot
(blb) 251 #top10k #Changeling
Chameleon Colossus
(mor) 116 #top10k #Protection #Changeling
Mistform Mask
(ons) 94 #Enchant
Mistform Shrieker
(ons) 96 #Flying #Morph
Runed Stalactite
(lrw) 260 #Equip
Wings of Velis Vel
(lrw) 97 #Changeling
Mistform Dreamer
(ons) 93 #Flying
Universal Automaton
(mh1) 235 #top10k #Changeling
Realmwalker
(khm) 188 #top1k #Changeling
Turtleshell Changeling
(lrw) 94 #Changeling
Amorphous Axe
(mh1) 219 #Equip
Mistwalker
(khm) 68 #Changeling #Flying
Mistform Seaswift
(lgn) 45 #Flying #Morph
Mistform Stalker
(ons) 98
Changeling Titan
(lrw) 200 #Champion #Changeling
Littjara Glade-Warden
(khm) 182 #Changeling
Ego Erasure
(lrw) 59 #Changeling
Webweaver Changeling
(mh1) 192 #Reach #Changeling
Littjara Kinseekers
(khm) 66 #Scry #Changeling
Barkform Harvester
(blb) 243 #top10k #Reach #Changeling
Shapesharer
(lrw) 85 #top10k #Changeling
Guardian Gladewalker
(khm) 174 #top10k #Changeling
Amoeboid Changeling
(lrw) 51 #top10k #Changeling
Mistform Wakecaster
(lgn) 48 #Flying
Omo, Queen of Vesuva
(m3c) 14 #top10k
Masked Vandal
(khm) 184 #top10k #Changeling
Mistform Warchief
(scg) 43
Gladewalker Ritualist
(khm) 392 #Changeling
Mistform Mutant
(ons) 95
Mistform Wall
(ons) 99
Mistform Ultimus
(lgn) 47
Woodland Changeling
(lrw) 242 #top10k #Changeling
Mistform Sliver
(lgn) 46
Moritte of the Frost
(khm) 223 #top10k #Changeling
#Support (1):
Lair of the Hydra
(afr) 259 #top10k
#Non-commander-legal (4):
Hydra
(tjou) 4 #top100
Multi-Headed
(ust) 117 #top100 #Augment
Hydradoodle
(ust) 112 #top100 #Reach #Trample
Hydra
(tc20) 12 #top100