I found some similar posts using debuffs to get out of CC in arena like
http://www.mmowned.com/forums/world-...a-exploit.html
but nothing like the exact debuff i found. Basically, you go and get a daily quest from the oracles called A Cleansing Song A Cleansing Song - Quest - World of Warcraft where you have to go and kill 3 different mobs. One of them is called Spirit of Atha and gives you a debuff called Deadly Poison which lasts for 2 minutes and does 200 damage every 10 seconds which STAYS in arena. It's very easy to just summon the mob, get the debuff and enter arena over and over again. As long as you don't hand in the quest you can do it forever.