Pick a commander! Or don't! Companions? Sure! Non-legal commander, extra partner, extra Choose a Background? Why not! You're in the fae realms now ✨ and these fae like artifacts. Basic lands? Those don't say artifact, we'll make some adjustments. are they basic or nonbasic? whichever's advantageous for the current effect! color identity?? no no no no no. nonsense! artifacts!

themes? motifs?? mostly it's just artifacts-oriented, but we added slightly extra Myr, mana ramp, and draw.

defaults: 4-player free-for-all, 40-card decks, 3 packs of 20 with pick 2 each time

in addition to the usual ones, here's the "basic lands" (as in you can have any number of them) :
Inventor's Fair
Roadside Reliquary
Buried Ruins
Urza's Tower
Urza's Mine
Urza's Powerplant
Ancient Den
Seat of the Synod
Great Furnace
Vault of Whispers
Tree of Tales
Cloudpost
Glimmerpost
Whirlermaker
Guildless Commons

there's a lot less removal than mtg at large, so if the playgroup votes for it, an optional extra basic would be Intro to Annihilation. for ~balance~