2.3: Made it clearer that a morph returned to hand without reveal is not part of the upgrade path.

2.3: Added a clarification that the player needs to identify a morph problem before it is about to be discovered by the opponent.

3.4: Added wording to make presenting the wrong decklist to an opponent a Decklist Problem.

3.5: Clarity on the order of when things happen once a problem has been discovered.

3.5: Companion restriction fix now parallels the normal error fix.

3.5: Removed the requirement that multiple copies of the card have to be discovered after the game has begun (can now happen during pregame procedures).

2.3: Upgrade language changed to account for disguise ability.