Motivate Earth

Effect: You touch a square containing mundane dirt, stone, or metal and create a 5 wall of the same material, which rises up out of the ground and must include the square you touched.

Alternatively, you touch a structure made of mundane dirt, stone, or metal that occupies 2 or more squares. You can open a 1-square opening in the structure where you touched it. You can instead touch an existing doorway or other opening that is 1 square or smaller in a mundane dirt, stone, or metal surface. The opening is sealed by the same material that makes up the surface.