The easier and more effective way is to “use” the soul jar, in which case you will get a pretty cool story and then you can smash it on the ground as part of the conversation window. The first is by placing it on the ground and simply hitting it with a weapon. In order to make sure they remain dead, you are going to have to destroy their respective soul jars. If you are forced to fight the necromancers (having failed a persuasion check) they will respawn unendingly. Simply entering the tower will cause this quest to be entered into your journal. After you complete the maze you can enter the tower where you will find three necromancers, Tamsyn, Rask, and Gwick. You can find the tower at location (46) of the Fort Joy – Hollow Marsh map. While exploring the world, you will discover the ruins of a maze (the Gargoyle Maze) that lead to a tower overlooking the coast. This quest only becomes available after you have escaped Fort Joy.
