New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
In T1 the defending player chooses which lost soul to give the opponent after a successful rescue attempt while in T2 the rescuing player chooses the lost soul he is trying to rescue before when the hero enters battle and if that lost soul is removed they cannot choose another one.
The defender chooses the soul after the battle has resolved and the attacker has won. They can then choose from any soul the winning attacker had access to.