Rising sun with red, orange, and yellow coming up from the base of the ulna bone, a sator square written on a stone tablet, swirling skulls on the elbow.
Sator
Arepo
Tenet
Opera
Rotas
"The creator holds the working of spheres in his hands". It was thought to have magical properties and displaying this would ward off evil. It's a palindrome in 4 diff directions the only one possible/sensical in any language.