Unweave

You take hold of a solitary thread of the Weave, turning it into a radiant thread of pure magical energy. The thread appears originating from a point you choose within range, and forms a line that is 100 feet long and 1 inch wide. The thread sheds bright light in a 30-foot radius, and dim light for an additional 30 feet.

A creature that touches the line or starts its turn within 5 feet of it must make a Constitution saving throw. The creature takes 8d10 force damage on a failed save, or half as much on a success.

On each of your turns until the spell ends, you can use an action to pluck the thread, creating a pulse of magical resonance. When you do so, any creature within 30 feet of a point you choose on the line must make a Constitution saving throw. A creature that fails the save takes 4d10 thunder damage and becomes vulnerable to all magical damage until the spell ends. This vulnerability takes effect after the thunder damage is applied.