It's easy to not notice it, or not think of it this way, but Mountebank shares with Torturer the property of not being just a cursing attack but actually a "choose one: discard or take a curse" attack. Mountebank's cursing is a lot stronger than Torturer's, of course, and its discarding is a lot weaker, but there are certainly plenty of cases where the discard still feels like an attack.