You disrupt the weave around a creature in range, who must be concentrating on a spell.They must make a wisdom saving throw, or be affected by this spell. At the start of each of the creatures turns, they take 1d6 force damage, as they weave pushes on them.If they stop concentrating on a spell, this spell ends, and they take 3d6 force damage, as their spell explodes in a burst of arcane energy.

At higher levels

When cast with a spell slot higher then second level, the damage dealt when they stop concentrating increases by 1d6.