If someone makes a pact with a magical entity, does it have to be warlock abilities, or can it be something more traditional — wealth, political influence, or something simple like killing someone they dislike? The deal with the devil stereotype.
I just find it kinda weird that a powerful being like a devil or outsider would only grant a fixed set of things. It seems kinda restricting for someone who lives by making deals. More deals means more power so if you could pick up a beggar who feels disatisfied with his lot in life and asks for "wealth and power" that would be a pretty good and easy deal which would require little to no effort.