Description
You create a 10-foot-radius, 20-foot-tall Cylinder of magical energy centered on a point on the ground that you can see within range. Glowing runes appear wherever the Cylinder intersects with the floor or other surface.
Choose one or more of the following types of creatures: Celestials, Elementals, Fey, Fiends, or Undead. The circle affects a creature of the chosen type in the following ways:
Each time you cast this spell, you can cause its magic to operate in the reverse direction, preventing a creature of the specified type from leaving the Cylinder and protecting targets outside it.