Like in iRo once the server is fully up and running again?
I can't remember if that's it's proper name. You talk to a poring outside of Prontera,get a group of friends together, split into two teams Deviling and Angeling, and have to kill your enemies mascots while protecting your own. When you kill someone you get a badge with their name on it and if you win the war you get a token that when you collect 100 of them you can trade them in for a pretty decent, Class specific accessory.