D&D Solo Adventure: Tyrant of Zhentil Keep (Fantasy Grounds) Author: Patrick Published Date: April 5, 2019 Leave a Comment on D&D Solo Adventure: Tyrant of Zhentil Keep (Fantasy Grounds) D&D Solo Adventure: Tyrant of Zhentil Keep (Fantasy Grounds) Author: PatrickJourneyman. Melancholiac. Stoic. A rebel and a runner. I think chocolate and caffeine are over-celebrated and I believe hot sauce pairs nicely with ice cream.