April 10, 2011 - Completed this as a grayed out quest. Did not receive "epic" credit. The x2 drakotas that had to be killed to make the dragon spawn were found on the same level as the dragon.
September 8, 2012 - I also killed the dragon (80 inqui. with Paladin merc) when it was gray and did not get a quest update. I was wondering if it was because I got knocked off the platform until I read the above. I'm guessing this means I have to mentor down to 75 to try to complete this. [Hjukka Dukka <The Ncg>, Oasis]