a person or thing that is mysterious, puzzling, or difficult to understand.
"Madeleine was still an enigma to him"
Enigma is the word I use to encompass my mystery projects. The Quarterly Engima Boxes are mystery boxes with Abi Be Made earrings as well as full size products from other makers and artists. The Enigma Blind Bags are smaller bags with 2+ randomly chosen earrings with often, never before seen designs.