I think you might want to stack two or three damnations on a paladin.

They can cast redemption if I recall, but not terribly effectively so it uses a lot of mana doing it. They might remove one damnation, but they are unlikely to remove 3 of them without using all or at least much of their mana. It basically gives you a nice way to drain their mana & leave them unable to recall, or simply leave them unable to recall.