The battle with Gul'dan is a long Battle for survival, the first phase deals with killing his demonic minions, followed by the mad warlock using fel-power to leap into the fray personally.
The mastermind behind the Third invasion of the Burning Legion, Gul'dan stands atop the Font of Night and attempts to use the time-space warping powers of the Eye of Aman'thul and the Nightwell to bring his master Sargeras into Azeroth within Illidan Stormrage's crystallized body. Gul'dan is the final boss of the Nighthold.
