Be the dangerous bad boy with a deck of Skull cards!
My second favorite deck of cards is this Skull deck by the US Playing Card Company.
I flip back and forth between carrying a deck of Arch Angels, and these Skulls. The Skulls backs are just lovely, with mostly standard Bicycle 808 poker faces.
The black and white cards look fantastic in flourishes and are made with the usual USPCC stock and finish, so they fan and glide beautifully.
Bicycle Skull Playing Cards via Amazon