Plot Points : Library of the Lich is a supplement for use with any type of Roleplaying game. It contains the descriptions of a powerful, sentient building containing millennia of hidden knowledge and the wardens who keep it safe. With two unique NPC's, 4 powerful items, and an arcane library at your disposal, this makes a unique addition to any type of story.
Now available on Drivethrurpg : https://www.drivethrurpg.com/product/286746/Plot-Points--Library-of-the-Lich
And on Itch : https://othea.itch.io/library-of-the-lich