Acwellan

Acwellan was a lich in Myth Drannor, who dwells in the Mages' Guild. He was once a wizard trying to research how to gain immortality. His attempts twisted his body and turned him into a lich. By 1358 DR, he is confronted by the Heroes of Waterdeep, who may decide to parley with him or just attack. Either way, they are forced to fight him. After he is defeated and at the point of dying, the Dark God takes away the Codex of the Planes, which he carried. In his dying breath, he begs the adventurers to stop the Dark God. With the last of his energy, he teleports the adventures near the temple of Lathander.