You get this by defeating the following raids -
Temple of Bertoxxulous: Queen Malarian; Blackburrow: Stop the Ascension; & Kithicor: Bahgresh
Then it is unlocked in Zebs list and u can buy it for chrono
Good place for all spells unlocked by raid info can be found here
Edited, Sep 29th 2009 10:17pm by Trainmaster
Edited, Dec 8th 2009 10:09pm by Trainmaster