Changeling

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This is almost all the Changelings, and 20-30 "Lord" type creatures.
I tried to not do too many Lords of one individual creature type, but Elves and Archers seem to have more than others.
 
Mana Acceleration (12): General (1): Non-Changelings (25): Sideboard (Omitted/Cut card ideas):
1 Dragon's Hoard 1 The First Sliver 1 Birthing Boughs 1 Knight of the Stampede
1 Myr Reservoir   1 Admiral Beckett Brass 1 Otepec Huntmaster
1 Atzocan Seer Changelings (26): 1 Gisa and Geralf 1 Kinjalli's Caller
1 Sarkhan Unbroken 1 Morophon, the Boundless 1 Horde of Notions 1 Temple Altisaur
1 Rooftop Storm 1 Unsettled Mariner 1 Reaper King 1 Lathliss, Dragon Queen
1 Elvish Archdruid 1 Cairn Wanderer 1 Silumgar, the Drifting Death 1 Slinn Voda, the Rising Deep
1 Elvish Guidance 1 Changeling Outcast 1 The Ur-Dragon 1 Kumena, Tyrant of Orazca
1 Krosan Warchief 1 Ghostly Changeling 1 Gravespawn Sovereign 1 Biogenic Ooze
1 Marwyn, the Nurturer 1 Graveshifter 1 Haakon, Stromgald Scourge 1 Grim Captain's Call
1 Wirewood Channeler 1 Moonglove Changeling 1 Lord of the Undead 1 Inalla, Archmage Ritualist
1 Sachi, Daughter of Seshiro 1 Amoeboid Changeling 1 Azami, Lady of Scrolls 1 Cryptbreaker
1 Mana Echoes 1 Mistform Ultimus 1 Galecaster Colossus 1 Seafloor Oracle
  1 Shapesharer 1 Keeper of the Nine Gales 1 Yuriko, the Tiger's Shadow
Lands (36): 1 Turtleshell Changeling 1 Riptide Director 1 Ingenious Infiltrator
1 Mutavault 1 Chameleon Colossus 1 Sea Gate Loremaster 1 Utvara Hellkite
1 Cavern of Souls 1 Changeling Titan 1 Unesh, Criosphinx Sovereign 1 Lord of the Unreal
1 Ally Encampment 1 Game-Trail Changeling 1 Wanderwine Prophets 1 Crookclaw Elder
1 Seaside Haven 1 Webweaver Changeling 1 Gilt-Leaf Archdruid 1 Captivating Vampire
1 Starlit Sanctum 1 Woodland Changeling 1 Greatbow Doyen 1 Catapult Master
1 Crucible of the Spirit Dragon 1 Changeling Berserker 1 Qasali Slingers 1 Battletide Alchemist
1 Haven of the Spirit Dragon 1 Taurean Mauler 1 Timber Protector 1 Grave Sifter
1 Flamekin Village 1 War-Spike Changeling 1 Crested Sunmare 1 Endless Ranks of the Dead
1 Primal Beyond 1 Avian Changeling 1 Knight Exemplar 1 Ojutai, Soul of Winter
1 Elephant Graveyard 1 Changeling Hero 1 Lin Sivvi, Defiant Hero 1 Call to the Kindred
1 Gilt-Leaf Palace 1 Changeling Sentinel 1 Scalelord Reckoner 1 Dr. Julius Jumblemorph
1 Wirewood Lodge 1 Impostor of the Sixth Pride   1 Goblin Warchief
1 Secluded Glen 1 Irregular Cohort   1 Karrthus, Tyrant of Jund
1 Ancient Amphitheater 1 Mirror Entity   1 Venomous Changeling
1 Auntie's Hovel 1 Valiant Changeling   1 Fire-Belly Changeling
1 Swarmyard     1 Mothdust Changeling
1 Wanderwine Hub     1 Skeletal Changeling
1 Murmuring Bosk     1 Universal Automaton
1 Riptide Laboratory     1 Sliver Overlord
1 Unholy Grotto     1 Amorphous Axe
1 Tropical Island     1 Peer Pressure
1 Tundra     1 Runed Stalactite
1 Crumbling Necropolis     1 Artificial Evolution
1 Arcane Sanctum     1 Unnatural Selection
1 Savage Lands     1 Xenograft
1 Seaside Citadel     1 Tribal Golem
1 Jungle Shrine     1 Shared Animosity
1 Frontier Bivouac     1 Mistform Mutant
1 Mystic Monastery     1 Wort, Boggart Auntie
1 Nomad Outpost      
1 Opulent Palace      
1 Sandsteppe Citadel      
1 Command Tower      
1 Path of Ancestry      
1 Reflecting Pool      
1 Sol Ring