cantrip earth evocation 

Traditions arcane, primal

Cast [>>] somatic, verbal

Range 30 feet; Area two contiguous 5-foot cubes

Saving Throw basic Reflex; Duration 1 minute

You evoke a jumble of rocks in the area. The scattering rocks deal bludgeoning damage equal to 1d4 plus your spellcasting ability modifier to creatures in the area, with a basic Reflex save. The ground in the area becomes difficult terrain for the duration. A creature can Interact to clear a square of this scree.

If you cast this spell again, any previous scatter scree you have cast ends.

Heightened (+1) The damage increases by 1d4.

Secrets of Magic, page 127.