Blood Chill

A ray of deathly-cold energy shoots from you towards a creature you can see within range. The creature makes a Dexterity saving throw. On a failed save, the creature takes 2d8 Cold damage and the temperature of its body plummets; its Speed is halved, it takes a -2 penalty to AC, and it can’t cast spells with Somatic components. At the end of each of its turns, the target repeats the save, ending the spell on itself on a success.