Dance of the Unicorn

After performing a quick dance, you summon several unicorns made of magical mist.  They dance around you with in a 20 ft radius centered on yourself.  Any creature of your choice with in the misty cloud is cured of any poison or disease afflicting them and gains advantage on Constitution saving throws against suffering poison damage and or being poisoned or infected by a disease.  This spell also suppresses the effects of the Cloud Kill spell and grants immunity to the breath weapon of Young Green Dragons and Wyrmling Green Dragons.