Just speculating for 2.3 next week...
Quiver of a Thousand Feathers - Items - World of Warcraft
Needs 99 Light feathers...doubt a level 70 can be bothered grinding that, they'll just AH it, they're dirt cheap right now.
Buy light feathers/resell next week for a quick profit.
Has worked in past patches such as when primal shadows inflated in new patches.