Argent Falcon is an encounter power granted by the Argent Falcon feat.[Dr386:69]
Argent Falcon
Feat utility
Your familiar transforms into a silver falcon, and shines with pure moonlight.
Encounter ✦ divine
Personal
Effect: Your familiar sheds bright light in its square and each square within 3 squares of it until the end of your next turn. Until the end of your next turn, enemies grant combat advantage while within 3 squares of your familiar.