I think this is designed to work with the Vehicles of Aetherdrift: Aatchik counts Artifacts (which Vehicles are) in addition to Creatures, and making all those little dudes are perfect crew for a Vehicles build
Support Pieces All decks need value engines to keep the cards flowing, and treasure decks have access to a lot of excellent options

Madison Li Dynaheir, Invoker Adept Elsha of the Infinite Elsha, Threefold Master Gandalf of the Secret Fire Gavi, Nest Warden Ghost-Spider Gnostro, Voice of the Crags Hinata, Dawn-Crowned Jodah, Archmage Eternal Kasla, the Broken Halo Kate Stewart Kilo, Apogee Mind Kykar, Wind's Fury Leori, Sparktouched Hunter Liberty Prime, Recharged Narset, Enlightened Exile Narset, Enlightened Master Narset, Jeskai Waymaster Nia, Fabled Skyclimber Numot, the Devastator Optimus Prime, Hero Pramikon, Sky Rampart Ruhan of the Fomori Saint Traft and Rem Karolus Satya, Aetherflux Genius Sevinne, the Chronoclasm Shiko and Narset, Unified Shiko, Paragon of the Way Sokka and Suki Sokka, Tenacious Tactician Tetzin, Gnome Champion The Archimandrite The Face of Boe The Golden-Gear Colossus Vadrok, Apex of Thunder Vadrok, Apex of Thunder Zedruu the Greathearted Zinnia, Valley's Voice Zurgo and Ojutai owyn, Shieldmaiden

If youre playing best-of-one only, you can only use the first seven sideboard slots, so be warned
Introduced on-stream by Magic's world building and narrative design manager Meris Mullaley, we first saw standard and borderless variant cards for Lolth, the Spider Queen - who is a Planeswalker in her MTG incarnation - then both standard and "rulebook showcase" frame versions of Drizzt Do'Urden and Bruenor Battlehammer
Do not rush setup