Soul jumping.

It wasn't the first time Kalso had awoken in a body at the gallows. Rope burning around his necked as the crowd irrupted into cheering his newly found vigour. "Pull on his legs" a gruff voice ordered above the din. "Get this one over with". Feeling the grip on his ankles he knew what came next. The crack, then the black. Onwards to another host.
Returning into bodies of the recently dead was Kalso's curse, ever since his botched sacrifice by the dark priest of Larordis. He would one day find this priest and kill him, and his entire order!