@maximumcdawg Looking at existing decks, if I were to put 1 or 2 Transmute Artifact into a Grixis Control deck, then I have Yawgmoth's Will plus Vault/Key. The issue is not losing the artifact, the issue is getting a better replacement.
Thinking about this card with a Damping Sphere strategy means you accelerate into a prison piece. If you are playing cards like Grim Monolith, then you can get something that cost 5 or 6 on turn 2 depending on the deck design.
To me the question is around strategy, I think there is a deck that wants this card, and I want to find a home for it. The Grixis deck is already very efficient and it is not even the better Xerox deck. An Esper artifact deck could maximize this card with some control pieces.
Or you could play a blue mid-range aggro artifact deck that works like a toolbox. Kind of a Survival of the Fittest style play with Transmute Artifact and Tezzeret the Seeker and/or Tezzeret, Agent of Bolas.
The question is what shell would best fit with this kind of card. You get to play from your deck and from you graveyard. I think that this card is being overlooked right now.