Unholy Aura

Umbral shadow pours out from your mouth and eyes and coalesce into murky tendrils that writhe on the ground dimming bright light or creating darkness in dim light in a 30-foot radius around you. Creatures of your choice in that radius when you cast this spell dim bright light or creates darkness in dim light in a 5-foot radius and have advantage on all saving throws, and other creatures have disadvantage on attack rolls against them until the spell ends. In addition, when a beast, celestial, or fey hits an affected creature with a melee attack, the tendrils strike and constrict. The attacker must succeed on a Constitution saving throw or be restrained until the spell ends.