Extra arms, ears, or tails

Wings (made of Tangible Shadow)

Nonbinary, Intersex, Hermaphrodite, etc... (External genitalia is summoned through magic in all Dark Sneps)

Tangible Shadow replacement body parts (With the exception of skull, ribcage, and pelvis regions, see Shadow Walker)

Taur

Bright colors (Pale/Pastel colors are an exception for flair such as hair tips, but not for main fur color)