Blizzard

A howling storm of thick snow and ice crystals appears in a 40-foot-tall, 20-foot-radius cylinder centered on a point you choose within range. The area is Heavily Obscured, and exposed flames in the area are doused.

When the blizzard appears, each creature in the area takes 4d8 cold damage, or half as much damage with a successful Constitution saving throw. A creature also makes this saving throw and takes damage when it enters the area for the first time on a turn or ends its turn there. In addition, a creature that takes cold damage from this spell has disadvantage on Constitution saving throws to maintain concentration until the start of its next turn.