Well I was playing with the robot skill and it made me wonder. Perhaps get an event set up that requires at leas 4 participants. Make 1 player who signed up a juggernut with like 150k hp. and the other 3 have to hunt him down in a maze map and try to kill him. Player who killed the juggernaut gets 1.5mil cps.
If making a player a juggernaut doesnt work or is too hard, make a "boss". Use the Dragons that you have for guards and make it have like 150k hp ^.^