Magic

Your dominion over **** Magic in all it's forms has terrified your enemies and friends as long as you've been alive. You can strike a man dead from a single curse without even having met the unfortunate. Whole legions fall before you as you call **** down upon them.
However, that is not what makes others tremble to hear tell of John Lord of ****.
Your greatest ability is the raising of the dead to serve you. You can raise entire graveyards at once, sending legions of skeletons to crush your enemies. As each soldier falls against you, you subsequently raise them up. Seeing former comrades marching against them has driven more than one army mad and rumours of that happening have made general after general surrender to you before battle could commence.
You like to think that it was you alone who finally won this war, and now you deserve some time to rest. What better way than with your most recent captive?