Following the defeat of Illidan in Outland, Kael'thas -bristling with power from his Manaforges in Netherstorm - finally returned to Quel'Thalas. Seeking to summon the demon lord Kil'jaeden, Kael'thas captured the personification of the Sunwell's power: Anveena. Kael attempted to summon Kil'jaeden into Azeroth using the reignited Sunwell as a portal. This was prevented by the actions of the Shattered Sun Offensive, a group of heroes charging into Sunwell Plateau and finally, the sacrifice of Anveena, who used her power to prevent Kil'jaeden's emergence.