Stone Throw

It wasn't much, just a small clearing in a forest at the foot of a mountain with a boulder in the middle of it.

But hundreds of years ago, a sword master was betrayed and murdered upon the stone. And his soul was transferred into it. Across the centuries, rarely, someone would touch the stone who was desperate for someone else to die. The soul of the sword master would emerge and do the deed.

And then, the stone was mined, ground into dust, and mixed into the paving outside a charity center.

So he became a lot more busy.