You imbue an arrow with your power and throw it at a target up to 100 feet away. Make a ranged attack roll. If it hits, the target takes damage from the arrow as if you had hit it with a single unarmed strike (including your Strength bonus).
Pathfinder Roleplaying Game Ultimate Magic. © 2011, Paizo Publishing, LLC; Authors: Jason Bulmahn, Tim Hitchcock, Colin McComb, Rob McCreary, Jason Nelson, Stephen Radney-MacFarland, Sean K Reynolds, Owen K.C. Stephens, and Russ Taylor.