Warcraft 3 Reforged expansion Alliance campaign Ch. 5

Illidan promises Kael'Thas a new source to feed his people's addiction to mana and a new destiny, but first they must overthrow Magtheridon, a brutal pit lord who has seized control of Outland. In order to do so, his tide of reinforcements must first be stemmed by closing the demonic gateways throughout the land.