Sorry if this is a repost, I didn't see anything similar to this around.
What this exploit does:
Divine Star will currently deal AoE damage and healing to everything AROUND you, rather than in a frontal cone. This exploit causes it to 'bug out' and be spammed indefinitely at no cost. You will be able to solo dungeons and possibly heroics.
You can also level your friends from 85-90 in around 20 minutes using the bird area. (http://www.ownedcore.com/forums/worl...rind-85-a.html ([Mop Beta] Extremely fast EXP grind. (85+)))
How to activate it:
This requires you to be in shadowform and have the Divine star talent.
Go through any loading screen (Hearthstone, instance portal, summon, anything) and as the cast time of your hearth stone finishes (or as you zone in) spam the Divine Star ability. You will know the exploit is 'active' as your character will be spazzing out and healing will be flashing all over your screen (If you have combat text enabled)
I currently can't provide screenshots, etc. I found this while watching a stream.