it is 2008459786
Log into portal.battleon and click on the 'Redeem Codes' tab and insert the code in the Prize Codes block, then click submit.
oicu812
either you just buy a redeem code from a store or just act like a loser and sit down on your spare time and guess(the first 4 digits are 8293)
Buy the AQW Battleon Battle Cards and redeem the code at portal.battleon to unlock the shop in your Book of Lore ingame.
http://www.aq.com/special/redeem/