You have a heart of void, and shadows for blood, villain.
You have poison in your breath, and a laugh that cracks stone, villain.
You have a subtle mind that can split a knife, and muscles that can bend steel, villain.
Fear, itself, fears you, villain.
So when you are weak or tired or afraid, draw yourself up from your dark, sinister core and unleash the unholy, unknowable energy that drives you.