[Note: Be original, leave your thoughts on Workshop at the door.]
This isn't meant to be a banned/restricted discussion or a commentary on the current metagame, but more a fun exercise in thought. There are hundreds of cards from Alpha through The Dark that have really never been powerful enough for tournament decks, and many more that are now strictly worse than modern cards.
What cards from the early sets do you think have mechanics or a power level that is not yet discovered or powerful enough in the current meta? What obscure card could you see being powerful in Vintage someday, given the right supporting cards or a different meta.
Looking for discussion on cards like Power Artifact, Black Vise, Transmute Artifact, Candelabra. Not suggestions like Mishra's Workshop or Mana Drain.