Emmerask's Chronal Barrier

Your connection with the arcane and understanding of time allows you to stop the flow of information between the brain and central nervous system.

You create an invisible barrier that is 30ft long and 15ft tall. Any creature with a brain that passes through the pane of your spell must succeed an intelligence saving throw. On a success the creatures movement is halved for the remainder of their turn. On a failed save a creature is considered stunned and may retry their saving throw at the end of their next turn. 

A creature that is held still in this way for 1 minute is considering to have suffered major brain damage. 

Projectiles, Constructs, Inanimate Objects and creatures whose brains are protected magically are unaffected by this spell.