Thread Ripper.

As a Magic Action you can target a creature that you can see within range embueing a seam cutter with mystic Arcane energy. Allowing you to cut the treads holding their magic together. Causing them to make an Intelligence saving throw. On a failed save they take 2d6 + your spell casting modifyier as force damage, and half as much on a a successful one. You gain a barrier of reality equal to half the damage taken as temporary  HP. 

Using higher-level spell slot.

The damage increase by 1d6 for each spell slot level above 2.