Unholy Aura

A dark aura surrounds you and strands of dark energy spills out of you in a 30-foot radius around you. Creatures of your choice in that radius when you cast this spell will be engulfed into your unholy aura, while they are surrounded by the aura they have advantage on all saving throws, and other creatures have disadvantage on attack rolls against them until the spell ends. In addition, when a Celestial or a creature of good siding hits an affected creature with a melee attack . The attacker must succeed on a Constitution saving throw or be blinded by the darkness until the spell ends.