Didn't want to make a new topic, so i'll just add it here, since this topic seems most valuable:

If you want to boost 60-65 do it in underbog and clear till the second boss(the dragonthing on a plateau above water)

Place slaves here:


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That's when you enter the instance, the small group of mobs you'd normally skip to the most left/north, If you put the slaves on the edge of it, they'll recieve experience even when you kill Ghaz'an.

Goes a lot faster then questing for me.