During the Movement phase, instead of moving normally or declaring a charge, the Vermillion Warbird may declare an Emberstorm attack. Draw a straight line up to 12" in length. Each model in the way of this line (using the line template) suffers a Strength 4 hit with the Flaming Attacks special rule.
After these hits are resolved, place the Vermillion Warbird at the line's end point. If this leaves the Vermillion Warbird in contact with an enemy unit, then place the Vermillion Warbird in combat with the unit, using the line along which it moved to determine which facing of the enemy unit the Vermillion Warbird is attacking. If the Vermillion Warbird ends an Emberstorm attack in combat with an enemy unit then it is treated as having charged that unit.