In addition to the Commander of the deck, inclusions like Celestine, the Living Saint, Cosmic Rebirth, and Sevinne's Reclamation are all great options to provide additional recursion
In longer chains, it acts as a Narcomoeba/Prized Amalgam hybrid can both trigger our 3/3 and its a somewhat threatening body on its own
The top right corner is the 'cost' that a player would need to spend to summon a Black Knight (two black mana from Swamps, in this case)
18 Elesh Norn, Grand Cenobite: $290 Any card that can give all your creatures +2/+2, and all of the creatures your opponents control -2/-2, is a good card to have
Doing this said something about who I was
This archetype is especially strong when artifact cards are not only for the artifact deck. A good artifact creature can be aggro filler, sacrifice fodder, blink material, or equipment carrier