Shadow Clone

Ecology
Shadow Clones are magical manifestations created by the enchanted mirrors of the Necropolis Sanctum. They are perfect, dark reflections of a creature's physical form, equipment, and combat style. They have no independent life, existing only as long as the mirror that created them remains intact.
Combat Mechanics
A Shadow Clone has the exact same stats, AC, and abilities as the creature it copies, but it has only 1 hit point. However, any damage dealt to the clone is shared with the original creature via psychic resonance (DC 15 Wisdom save for half damage). The clone will always prioritize attacking its original, mimicking their movements with terrifying precision.
Loot
A destroyed Shadow Clone leaves behind a "Mirror Shard." This shard is a powerful component for high-level illusion magic and can be used to craft a Mirror of Life Trapping.