You can run up to a long distance as long as you take no other actions. During your action and until the beginning of your next turn, you are partially phased, and some attacks pass through you harmlessly. While phased, you gain an asset to your Speed defense tasks, but you lose any benefit from armor you wear. Note that some of your other special abilities enable specific actions that you can take while using Phase Sprint. For instance, when using Disrupting Touch, you can make one touch attack while moving (though this ends your movement).