You create a sphere of spiralling arcane forces at a point you choose within range. Creatures within the area must roll a Strength saving throw. On a failed save, creatures receive 6d6 force damage and are pulled at the center of the sphere. Start the pulling effect from the closest creature to the center to the farthest ones). Huge or bigger creatures are immune to the "pulling effect" of the vortex and creatures can'T enter the space of other creatures because of the spell. They instead take the closest available space from the center. Creatures receive half the damage on a successfull save and aren't pulled toward the center. The vortex disappears at the end of your current turn. Please note that the vortex spreads around corners.
At higher levels: You add 1d6 force damage for each spell slot level higher than 3rd.
* - (a handfull of sand or salt that you pour in front of you, making a spiral with it.)