Brainstorm

Using 1 action the caster makes a DC-12 INT check and on a success, a white spectral tornado appears around the caster, the eye of the storm has a 15ft diameter. On a failure, all Intelligence related checks are halved.

Any creature that touches the storm is blown 10ft back and takes 2d8 +2 force damage (decided when cast).

The storm cannot move and exterior winds are not strong enough to move creatures unless tiny.