Creeping Frost

You send a web of creeping frost outwards from a point that you touch. The web consists of up to ten 10-foot lines, which you can arrange as you wish. Each line is 5 feet wide, and must have at least 5 feet of one face adjacent to the face of another line. Each creature in a line must make a Constitution saving throw or be covered in frost for the duration. A creature that ends its turn covered in frost takes 3d8 cold damage and can make another Constitution saving throw. On a success, the spell ends on the creature.

At the start of each of your turns, you can cause the frost to creep from each creature affected by the spell to an adjacent creature, which must make a Constitution saving throw or be covered in frost as well.

The frost can travel over any surface (including across or through water), but can't travel over gaps larger than 1 foot, or through an area of fire more than 5 feet wide. It also damages plant life in its path, freezes liquids that aren't being worn or carried, and extinguishes nonmagical fires it passes through.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d8 for each slot level above 5th.