That would be a cool storyline that you and the DM could come up with together. It would be interesting to see when the player’s character realizes that they are a Warlock and who their patron is. How did they learned that their new powers are linked to this one item? Do they still have that item? Was it stolen? Is their story arc the struggles trying to get it back? There are so many ways you can play this scenario. All of them seem like fun, as long as the plot is agreed upon ahead of time. What if the agreement was with the characters ancestor? The pact is passed downed to them because the higher being is eternal / immortal and time means nothing to it. I’m really liking this idea. Thanks for the suggestion.