Temmet, Naktamun's Will (DRC-004) [Aetherdrift Commander]

"Whenever you cast an Artificer or artifact spell, you get E (an energy counter).

At the beginning of combat on your turn, you may pay EEE. When you do, create a token that's a copy of target permanent you control, except it's a 5/5 artifact creature in addition to its other types and has haste. Sacrifice it at the beginning of your next end step."