You are going to need 2 main items for this to work the Headdress of the First Shaman which is a rare artifact from orc archeology, and some deepstone oil. (optionally you could use anything that takes control of minion, like a minizep controller)
It's fairly simple to pull off, get on any flying mount (or high area) and jump off, while falling activate the Headdress and your character will float in midair for 1 minute or until you unequip the helm, while in
this state you can mount up and do any emotes and use most items, and when you get in a comfortable position just use the oil and you will permanently float, optionally instead of using this you could just activate the minizep controller and have the same effect (however since the minizep controller only lasts 5 minutes you'll need to reuse the headdress to remain in the air afterwards)