The Tower of Troubles is a Mages guild where young wizards and sorcerors are trained in the Art. It arose as a compromise between the gods of Bareel and the human practitioners of magic.
Specially treated troll flesh dried in strips like jerky which heals in small doses.
War of the Roses as a campaign plot. Two noble lines converge somehow, each line thinks it has the rightful claim to the throne. Deciding this long ago was handled by some divine intervention, requiring both houses to come together at some point. They aren't so willing to get together this time. Civil war, or a new king?