Grimoire of Tainted Blood (Rank 4)

Grimoire of Tainted Blood (Rank 4) teaches rank 4 of Tainted Blood (felhunter ability) to the warlock's felhunter.
==Source==
It can be purchased for from:
* in Undercity
* in Stormwind City
* in Orgrimmar
* in Ironforge
* in Swamp of Sorrows
==Patch changes==
*
==External links==
Tainted Blood (Rank 4)