Grimoire of Sacrifice (Rank 4)

Grimoire of Sacrifice (Rank 4) teaches rank 4 of Sacrifice (voidwalker ability) to the warlock's Voidwalker.
==Source==
It can be purchased for from:
* in Undercity
* in Stormwind City
* in Tirisfal Glades
* in Orgrimmar
* in Durotar
* in Dun Morogh
* in Elwynn Forest
* in Ironforge
* in Swamp of Sorrows
==Patch changes==
*
==External links==
Sacrifice (Rank 4)