New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
End the battle is too strong on an offensive card. Even without an interrupt attached I would be very wary of putting that mechanic on a good card. Ending the battle is stronger than other battle winners because it immediately goes to battle resolution and thus a redeemed soul. This card effectively says "Rescue a Lost Soul. Cannot be interrupted."
Here's a revamped version. I wanted an enh involving music to be able to be used on CoW Moses as there are only one or two that can be used on him. I considered making it CBI if used by a hero involving music instead but felt that might be a bit too strong. And Moses wouldn't be able to use it (unless he's banded into battle).