Powerful Mojo gotta whole lotta mojo, take care.
Contents
Sources
A Powerful Mojo drops off Troll NPCs beginning around level 58. Lower Blackrock Spire is a good place to farm.
As an ingredient
Alchemy
Blacksmithing
Engineering
Jewelcrafting
Leatherworking
Tailoring
As a quest objective
Patch changes
Patch 6.0.2 (2014-10-14): Stacks to 200, up from 20.