As a Thoughtseize effect that essentially cant be played turn one, it seems like a tough ask to ever make the main deck
Cards like Spectral Procession and Clarion Spirit pump out flying spirit tokens, and that helps with cards that require spirits in numbers
As is tradition, all results are ordered by EDHREC score, only we'll go by the commander score on this one
Create a 1/1 red Balloon creature token with flying
You could try a three-color paradigm like Ikoria, a five-guild setup like Strixhaven, a colorless-heavy structure like Brothers War, a lopsided ten-guild spread like Zendikar Risings Party mechanic Mix and match, or even treat your cube like a sandbox for the drafters to invent their own archetypes
Ratchet, Field Medics convert trigger is anytime you gain life, and when you do you can return an artifact with a converted mana cost less than or equal to the amount of life you gained straight to the battlefield