1- You group at a place and the event randomly choses between, zerker pk, pure pk, dh pk, hybrid etc. once thats chosen your stats are switched accordingly and certain prayers are disabled. your setups are completely identical ( or can chose between preset items). once you are in with all other players you chose a fight. its a deathmatch, the winner gets his supplies replenished and moves to the next fight. top 3 get rewarded. (irons, hardmodes, hardcores can be given different rewards)
this is basically the clan wars tourny which he is working hard on revamping now.