Like alliance wars but clans vs clans. Moderated by GM with set rules and penalties for each breach of set rules. Clan vs Clan and scoring can be done through x amount of round (best of 21 for example) as each member gets one life per round with substitions of members.
Basic KO tourney structure, possibly with seeds.
Level handicaps if need and be agreed by both parties. Number of participants per round, level cap or compromise with using lower level wep, and use of various functions to be set for rules section.
Very crude but should be easy to put something good and PvP packed with this little idea. Just because there aren't enough alliances but plenty clans
