Task Giver: Council Man of Cristanos found in Barren the hub zone.
Task Duration: n/a
Requirements: ** Please note, that you need to have done your Epic 3.0 quest before you can complete this quest.
Travel to Tenebrous Mountains (#peqzone Tenebrous or /say Tenebrous to Grand Archanist Fink)
Travel to the Coterie castle, on the east side of the zone.
Locate and kill Disciple of Marnek
** Please note, that you need to have done your Epic 3.0 quest before you can turn in the Vial of Blood.
If you do not have your Epic 3.0, he will return the Vial of Blood to you.