As an action, you roar, rear up, flex your wings, or do another similar movement that frightens creatures. Each creature of your choice that is not a construct or an undead in a sphere around you must succeed on a Will saving throw or become frightened of you for the duration or until you are incapacitated.

While frightened by this maneuver, a creature must move at least half its speed away from you by the safest available route at the start of each of its turns, unless there is nowhere to move. If the creature ends its turn in a location where it doesn’t have line of sight to you, the creature can can repeat the saving throw, ending the effect on itself on a success.