New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
could you recurr a covenant/curse with an ability that recurrs an enhancement
The reason it can be discarded for Zimri, Uzzah, etc. is that when you use it (putting in art pile, or storehouse, or battle, or even discard it), then you can designate it as either an artifact or enhancement. However, only the owner of the card can make that designation.
A reversal on this order cannot be made unilaterally. Is this your opinion or are you reporting a new elder consensus?
I don't believe this is a new rule, only a realization of a rule that has existed since prior to Boston Nationals when Rob decided Covenants/Curses could be used to pay a cost from hand. Most of us didn't realize the legality of it because one of the most common situations (opponent's Gabriel targeting a Cov/Curse in your deck) still doesn't work.
A Curse card has a serpent and a skull in the icon box. A Curse may be used either as an artifact or as an enhancement. When you target or play your use a Curse, you decide which card type you wish to use it as. If you want to use it as an artifact, disregard the skull icon and play the card as you would any other artifact. If you want to use it as an enhancement, disregard the serpent icon and play the card as an evil enhancement.
It would all be a lot cleaner if they were allowed to function like DAE's where they are both Enhancement and Artifact in hand, deck and discard, and become strictly one or the other when on the table depending on they're played?