Hlarkus Baltreyo

In the game Dungeons and Dragons: Neverwinter the player can take a quest in the Dead ring where you are told to "Go to the City of Thay" and during night to go to the phantasmal fortress to kill Baltreyo.

The battle is a generic one where the player defeat the lich only to have his phylactery appear and then the player attack the phylactery. After a certain amount of damage the lich will reappear and the phylactery will disappear. After a few rounds where the lich take different illusions of the people that are in the game intro the lich falls and the player is rewarded with 16 silver and 56 copper paces and a item known as "Phantasmal Fortress Treasure Trove".

Referrence

 * Dungeons and Dragons: Neverwinter