Its also a mono-blue creature, although Id probably prefer something smaller and cheaper
Sadly, a creature with the changeling ability will also have the human creature type, and you can only mutate on non-human creatures

Buckle Up Commander (1) Planeswalker (1) Creature (27) Etherium Sculptor Gold Myr Myrsmith Riddlesmith Silver Myr Sram, Senior Edificer Vedalken Engineer Drumbellower Emry, Lurker of the Loch Foundry Inspector Hanna, Ship's Navigator Master of Etherium Sai, Master Thopterist Shimmer Myr Aeronaut Admiral Arcanist's Owl Indomitable Archangel Katsumasa, the Animator Raff Capashen, Ship's Mage Solemn Simulacrum Teshar, Ancestor's Apostle Whirler Rogue Cataclysmic Gearhulk Ironsoul Enforcer Research Thief Cyberdrive Awakener Kappa Cannoneer Instant (8) Dispatch Swords to Plowshares Armed and Armored Reality Shift Generous Gift Crush Contraband Release to Memory Access Denied Sorcery (4) Dance of the Manse Universal Surveillance Thoughtcast Organic Extinction Enchantment (2) Swift Reconfiguration Thopter Spy Network Artifact (20) Sol Ring Arcane Signet Azorius Signet Colossal Plow Fellwar Stone Imposter Mech Mobilizer Mech Smuggler's Copter Aerial Surveyor Cultivator's Caravan Imperial Recovery Unit Mirage Mirror Peacewalker Colossus Prodigy's Prototype Raiders' Karve Shorikai, Genesis Engine Surgehacker Mech Weatherlight Skysovereign, Consul Flagship Parhelion II Land (37) Command Tower Exotic Orchard Island x15 Plains x15 Port Town Prairie Stream Skycloud Expanse Spire of Industry Temple of Enlightenment Commander, Theme, and Strategy Buckle Up is all about bulldozing your opponents with vehicles and artifact synergies

On its early turns, it doesn't seem to achieve much - play a land, fetch a land, create a puny plant token
First, what is my critical ink amount for my deck to fully operate