The Codex of Xerrath (ability)

The Codex of Xerrath is a passive warlock ability learned by defeating Kanrethad Ebonlocke and completing the Pursuing the Black Harvest scenario, which corrupts all of the warlock's fire spells with fel magic, giving them a green, entropic fire effect. Icons, spell effects, and UI elements are all affected. It also alters the appearance of Metamorphosis (warlock ability), causing it to resemble Kanrethad's green demon form.

The ability can be unlearned by speaking to Jubeka Shadowbreaker in Shadowmoon Valley after completing the quest, for. It can be relearned by clicking on Kanrethad's banished form, located atop a nearby hill.

Affected spells
The Codex of Xerrath affects all of the warlock's fire spells.

Other spells affected include:


 * Dreadsteed
 * Felsteed (warlock ability)