Unrelenting Force

When using this spell, the user channels the words Fus Ro Dah, which in the language of dragons means Relentless Force. An ancient cry that evokes a powerful force that damages and pushes enemies back several feet. Enemies must roll a Constitution save, if they fail they are magically pushed back 20 feet and take 1d10 bludgeoning hit points. If they succeed they are still pushed back but only take half as much damage.