New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
It's an interesting way to win a block via a side battle...
It would make the Rescue Attempt become a Battle Challenge. Since you are losing the battle, this would serve no purpose, other than to prevent your opponent from attacking you during their turn.
That'll teach anyone who listens to me for ruling questions.