1. Prepare 2 players in a server. 'A' and 'B'
2. Make 'A' exit the server, making him go into combat logging mode.
3. 'A' will immediately join back into the server.
4. Meanwhile, player 'B' will punch player 'A' to unconscious so when 30 seconds pass 'A' will die.
5. 'A's old corpse can be looted, but 'A' will login as if nothing has happened.
6. repeat 2-5