It was a big deal when the Draenei broke off from the Man'ari Eredar. Really. A big deal. Kil'jaeden and Archimonde were like "Hey, let's go." Most of the Eredar were all like "Ya kewl." But the party-fouling Draenei were all "Worst group evah. BAI." Aaaand... that's pretty much a detailed summary.
And like most Gnomechewer Lore, it MUST be told through song and dance via a music video. Not because I'm creative, but because my friends and I can't voice act. KAAKOW!