As two actions, you direct wave after wave of concussive kinetic energy in a sphere centered on a point within 20 meters. The sphere spreads around corners and remains for the duration.
When the area appears, each creature in it must make a Fortitude saving throw.
On a failed save, a creature takes 2d4 concussion damage and if it is Large or smaller it is pushed up to 2 meters away from the center of the sphere.
On a successful save, a creature takes half as much damage and isn’t pushed. A creature must also make this saving throw when it enters the spell’s area for the first time on a turn or starts its turn there.
As an action, you can spend 1 mana or psi to move the onslaught up to 5 meters in any direction.
You can increase the damage by 1d4 and affect a creature of a larger size for each additional mana or psi expended.