Card revisions are coming fast & furious now.
First up is Doom. This was a solo only card, now a regular version exists:
A powerful card, but certainly limited - you can only have one in your deck, it can't be brought back (removed from game when played), and it can still be dispelled.
Next up is The Open Tomb. Modified to take advantage of Balor's ability:
Discard your upcard to basically draw an extra card.
Next revisions: Magic Items