This is a pyramid with the eye of Horus on the upper portion. The upper portion of the pyramid rotates 360°
Fun fact: I didn't realize there was a quick way to make each layer of the pyramid (200 some odd layers) and I extruded each of them independently. It took ages to do and goes to show why brute force isn't always the answer.
Detailed information on how to build this can be found at:
Black and Silver
The support pattern is lines with the prime blob enabled as well.