Unleashes a wave of cold in 30 ft sphere in range, sapping the area of heat and energy for the duration of the spell. When you cast this spell, each creature in the area must make a Constitution saving throw. On a failed save, the creature takes 5d8 cold damage, or half as much damage on a successful one. When a creature enters the spell's area for the first time or starts its turn there, it must make a Constitution saving throw. On a failed save, the creature takes 5d8 cold damage and immediately ends its turn. On a successful save, the creature takes half as much damage.

If a creature is in the area of effect, it's speed is halved. Additionally, attack rolls against the creature have advantage and the creature's attack rolls have disadvantage.