I'm going to be running the Mistborn RPG soon, and I wanted an interesting twist for the part of the party that has read the novels. So I've decided to run with the "Kelsier hires the PCs rather than the heroes of the Mistborn Trilogy" conceit for the first part of the campaign, and then in a fit of sleep-deprivation-induced creativity, hit upon the reveal in the title. Ruin and Preservation have been Splintered. I've got a few basics that should logically be in place to support the campaign - first of all, the setting needs to be essentially the same on the surface. Lord Ruler still rules, ash still falls, mists still at night, so on and so forth. These likely wouldn't be true if Ruin and Preservation had both been splintered, sure, but the game will be better with those things in place. The fact that the Final Empire and the Lord Ruler are both around means that the Splintering would have happened post-Ascension. The culprit, for simplicity's sake, is the only person we know to have Splintered a Shard. Other than that, I'd like some suggestions for possible implications of this - what form would the Splinters of the two Shards take? Would the culprit have left his mark? (Actually, that's a damnation good question - does a new Shard coming to a place change the magic systems there? Temporarily? Permanently? Food for thought.)