I'm sure many of you are familiar with the toy Emerald Winds. Emerald Winds - Item - World of Warcraft
To fly in Legion simply jump from a high ledge and use the toy. Then use this macro.
/run local t = time() + 3 while time() < t do end
This will freeze your game for three seconds and lock your character in place, essentially making it so you can activate the toy over and over for the course of the next two minutes. I wasn't going to post this up but I've had a change of heart. Please delete if this is a repost as I no long have access to the Elite section.
EDIT: If you find somewhere to go with this exploit or just something useful let me know. As it stands right now I have found no significant use of out of this besides for shits n' giggles.