And even if you can 3 man it, its still worth doing.... "Run away little girl, run away!"

Bonus note; for reasons only known to him and his fuzzy little brain, Blu has completed the Nightbane attunement, so if you have always wanted to down him, study up

http://www.wowwiki.com/Karazhan

http://www.google.com/imgres?imgurl=http://www.multiplayers.co.uk/files/bedlam/bedlam-firstkill-karazhan-attumen_small.jpg&imgrefurl=http://www.multiplayers.co.uk/forum/showthread.php%3Ft%3D6727&h=640&w=800&sz=500&tbnid=ji_apcM1MbOnDM:&tbnh=114&tbnw=143&prev=/images%3Fq%3Dkarazhan&hl=en&usg=__NsUb7sZQb19uWQGcgpY0GP8M4H8=&ei=QCtzS_3AKIjM8QavwJC0Cw&sa=X&oi=image_result&resnum=6&ct=image&ved=0CBwQ9QEwBQ