Arctic Breath

A line of freezing arctic wind 30 feet long and 5 feet wide blasts out from you in a direction of your choice. Each creature in the line must make a Constitution saving throw. On a failed save, a creature takes 3d6 cold damage and their movement speed is reduced by 10 feet until the start of their next turn. On a successful save, a creature takes half as much damage and isn't slowed.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot above first.