Casper's Drowsing Mist

You briefly conjure a 30 foot wide sphere of purple sparkling dust within range. Each enemy inside the sphere when it appears must succeed on a wisdom saving throw or feel drowsy. While drowsy, the target has disadvantage on attack rolls and strength and dexterity saving throws. They repeat the save at the end of each of their turns, ending the effect on a success. They automatically succeed after 1 minute. If they fail the saving throw by 5 or more, they are instead unconscious for 1 minute, repeating the saving throw at the end of each of their turns and succeeding after 1 minute or after another creature takes an action to wake them.