Rejected !deathmatch option for dead players

Recently, i visitited some other servers and i stumbled upon a server that had a !deathmatch function. Basically, when players die, they typed that into their chatbox, and they respawned into the map. However, when they spawned in, they were invisible to alive players and only visible to other dead players who used the !deathmatch function. Then, these dead players played a free-for-all deathmatch until the real round was over.

 

Please search before making suggestions.