If you watch http://www.wowhead.com/npc=101002 fight from end till start its about a nice demon building a bridge for the us.
(https://www.infinite-guild.eu/upload/smfpics/legion/nh/krosusmsmall.jpg) (https://www.infinite-guild.eu/upload/smfpics/legion/nh/krosusmbig.jpg)