The Wheel of Fortune represents good luck, karma, fate, and life cycles. Reversed, it’s about bad luck, but also breaking cycles. Sunset’s journey is in many ways a mirror of Twilight Sparkle’s rise to godhood, and she faced quite a few rises and falls in fortune along the way. She was evil for many years, and that was karmically turned back upon her when she started her redemption arc; when she became good, that was slowly turned back on her.
Symbolism! Anubis actually does traditionally appear on the card as a figure of mortality – opposite him sits the Sphinx, here represented by Ba’ast, representing wisdom and knowledge. Discord is, of course, the serpent of Chaos, bringing life to the material plane. The four creatures also represent the four elements - Sunset is fire, naturally, while nimble and flighty Ba’ast is air, ever-changing Discord is water, and stern, stoic Anubis is earth. The wheel itself is traditionally also covered in religious and alchemical symbolism that doesn’t translate all that well to this context, so instead I put on the various deities of Equestria, thus representing spiritual power as well as the elemental power those gods represent. In the center, naturally, I put a mirror. That can represent either reflecting on one’s own actions, or perhaps a portal to another, mysterious realm of existence.