This is a mug shaped like a cartoonish squatting witch doctor with large bug eyes, a bone through his nose, and a hat with skull and crossbones, holding a shrunken head.

From Lost Temple Traders:

"Kaduku the Witch Doctor mug is a collaboration between Lost Temple Traders and Atomica Exotica. The mug stands 8” tall and is limited to 250 mugs in each colorway and is produced by Munktiki Imports. "

There is a bone glaze version and a green glaze version. This Faust Edition came after the initial color-ways and was hand-painted and limited to 12 pieces only.