Mark a monster's living soul as yours, once the monster dies. The soul will retain at least some of the monster's faculties, and sometimes even the monster's equipment. However, you can only enslave one soul at any given time. Note that enslaved souls, whether twisted or intact, can leave the level they were created on via stairs.

Mark a monster's living soul as yours, once the monster dies. The soul will retain at least some of the monster's faculties, and sometimes even the monster's equipment. However, you can only enslave one soul at any given time.