New Redemption Grab Bag now includes an assortment of 500 cards from five (5) different expansion sets. Available at Cactus website.
Only if a character is opposed in battle. This is due to the definition of "play," which includes the activation of an ability.
It seems like Lifting the Curse is active in territory and stays active as an ongoing ability until the trigger happens and it ends.
Megaman, Pol, and galad are correct.