Blizzard

Until the spell ends, razor sharp shards of ice fall in a 30-foot-tall cylinder with a 10-foot radius centered on a point you choose within range. The area is obscured, and exposed flames in the area are doused.

The swirling winds make moving treacherous. When a creature enters the spell's area for the first time on a turn or starts its turn there, it must make a constitution saving throw. On a failed save, the target's speed becomes zero and it takes 9d4 cold damage

If a creature starts its turn in the spell's area and is concentrating on a spell, the creature must make a successful Constitution saving throw against your spell save DC or lose concentration.