Braids, Arisen Nightmare Powerful card, though not one that necessarily specializes in artifacts
Then your Commander will come back with a +1/+1 counter when it dies, if it didn't have one, so that's a nice way of getting one free redo before it heads to your Command Zone, which also encourages the swinging
A deck that is truly stocked up with artifacts is Urtet, Remnant of Memnarch
When Im thinking about cards that really allow one player to do it all every time they hit the board, this is one of the first that comes to mind
Sink into Stupor / Soporific Springs Sink into Stupor is a favorite card among blue mages with the ability to deal with spells on the stack and many sorts of permanents
Play Cogsworth, give something Rush, then bounce him back to your hand to do it again later