While I think the Mox will bring some nice dynamic plays and interesting variance I am not entirely sure the net effect of the Mox will be all that positive
But I can see an edge case where it could be a useful addition to a 60-card deck
Its possible to create an infinite loop with Jan Jansen, Chaos Crafter if you have Clock of Omens and have a way to make Jan Jansen into an artifact, something like Liquimetal Torque or Liquimetal Coating
Essentially you set yourself up with a rock solid board position
At six devotion, were doubling Siege Rhinos enters the battlefield ability in exchange for +2/+1 worth of stats, trample, and a mana in the cost
Green has been good for so long, I wouldnt be surprised if most of todays players didnt realize that green was famously considered the weakest color by a large margin in the early days of competitive Magic, a reputation that persisted for many years