Aftershock

When you cast this spell you choose one point of origin on a surface that isn't being worn or carried within range. The spell sends a bead through the surface if this is no thicker than 15 ft. Causing an explosion on the other side. Each creature within a 15 ft. cube in front of the surface takes 1d10 + SPELL CASTING MODIFIER fire damage and must succeed on a savingthrow or take 1d10 fire damage twice.