Plot twist: The entire world is destroyed in the future, so there’s no real goal, except maybe kill all the other players and just hope there’s a woman around somewhere to reproduce…
Alternatively: when you pull the trigger, the gun disintegrates in your hands
Wand of Duplication
Effect: Upon use, conjures up an identical copy of this wand.
Consumes: 1 Wand of Duplication
Disintegrating Pistol you say?
Make them “disintegrate” into the past where they train and become stronger until they meet back up with the main characters for revenge.
If you make them go far enough back, they could start a whole historical faction that has a cult about a coming apocalypse started by those who can send people back in time. The cult’s main objective would be to destroy the gun by allying with some time shift immune entity.
The players won’t know what is going on until they find a temple with “A symbol of the apocalypse” which is just an image of the disintegration gun. Bonus points if they discover this after the gun has been destroyed and the cult celebrates for a seemingly minor victory.
Only works if they somehow reappear where the PCs are though, the enemy reappearing in the future in the same location wouldn’t change a thing and it is locked to the gun then it’s useless if they lose it/get rid of it…
In order to function it essentially ties them to the location of the gun, say the players figured it out and left it in a field at the right time? Chaos. All the mobs would probably fight and then party can pick off the last ones standing
But does it warps them ahead a certain amount of time or it warps all of them ahead to a specific point in time? 🤔 Not sure if I would prefer to have them reappear after a set amount of time or all at once…
Could be tied to the shooter as well so no matter what happens with the gun doesn’t matter…
Futurama did it