This spell allows the target to cause the ground to rise up beneath him. As a swift Action, the target can cause the ground to rise 5 feet, while all adjacent squares are treated as steep slopes. The Groundswell precludes Flanking from creatures standing at lower elevations than the target. If the target moves after creating a Groundswell, the ground returns to its normal elevation at the end of his turn; otherwise, it remains in place until the target moves or uses a swift Action to return the ground to normal. A Groundswell cannot increase elevation of the ground beyond 5 feet.