It's been pointed out to me that it means cards which use the specific word "specific" so it means all those cards which are "specific" to a specific fallen wizard or balrog, but not cards which are "Gandalf only"A card that is “specific” to a certain avatar can only be included in a deck if its player declares that they are playing that avatar at the start of the game.
The rule could be clearer.
I don't understand why it is different to the rules in MEWH and MEBA rules it cites, e.g.:
These are both more general (it applies whenever you have a fallen wizard) and more specific (it is very unambiguous when this applies).In general opponent format, you must reveal the identity of your Fallen-wizard before the game begins
So I'd suggest:
A player who is playing a fallen wizard or Balrog must reveal the identity of their avatar at the start of the game.
