Shadow Severance

Cut a creature away from its own shadow. The target must make a CHA save, taking 12d10 necrotic damage and losing resistance to necrotic damage until your next turn on a failed save, or half damage only on a success. If the target casts no shadow, it has advantage on the save.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.