Peasant Cube, playable on Arena, with a focus on Artifacts and Artifact synergies.

Artifact-heavy archetypes-
W/U Artifact and enchantments aggro
W/R Equipment aggro
U/R non-creature spells, servos/thopters
U/B Artifact control
R/B Sacrifice artifacts

Artifact-light archetypes-
W/G Go wide creature tokens (Servos, creatures that create tokens, etc.)
W/B Aristocrats (Sac servos, small creatures, etc.)
G/B Death-triggers, fill graveyard

Anti-Artifact archetypes-
U/G Ramp, extra-value
R/G Stompy ramp, artifact destruction

Playable on Arena through https://mtgadraft.herokuapp.com/