These are what GamParse shown as being cast during the fight.
Deathcaller Xylok on 12/20/2013
Deathcaller Xylok - 11
--- Deathly Gaze - 3
--- Grip of Zalikor - 1
--- Mind Strip - 2
--- Pyre of Marnek - 1
--- Scent of Dread - 1
--- Slaunk's Swift Venom - 1
--- Termination - 2
Produced by GamParse v1.0.3