NYX Mischievous is a warm gold with a metallic finish that is permanent and retails for $6.00. In comparison, Obsessive Compulsive Cosmetics Triptych is a warm gold with a metallic finish that is discontinued and retails for $18.00.
Obsessive Compulsive Cosmetics Triptych is 90% similar — it is more shimmery, brighter, warmer, glossier.