DESCRIPTION

To cast earth burst, you must be able to touch the ground — any natural earthen surface is sufficient, including stone (but not including worked stone such as a path, stairs, or a floor). When the spell is cast, a furrow of displaced earth 5 feet across races toward the target area and explodes in a 30-foot radius of stone shrapnel and dirt. Anyone standing atop the furrow as it passes underfoot must succeed on a Reflex save or be knocked prone. Anyone caught in the blast itself takes 4d6 damage + 1 per caster level (max +10) and is automatically knocked prone. A Reflex save halves damage and allows the victim to remain on his feet.