The rules for transmute artifact (http://deckbox.org/mtg/Transmute%20Artifact) are incorrect. In january it had a very significant but quiet change in rules.

http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=202616

Its been bugging me for a while. Im not sure if this is the right place to post this but I can't find anywhere else to submit "bugs" of this sort.

Thank you for reporting this. It is now fixed: Transmute Artifact