Sweeping Attack, the enemy unit suffers D6 hits, and an additional D3 hits for each rank after the first rank. These hits are Strength 4 Flaming Attacks.
Sweeping Attack:
Special Ranged Attack. This attack may be used by units consisting of models with this special rule. At the end of the Remaining Moves subphase (or the Magic Phase if this is done as part of a Magical Move), nominate one unengaged enemy unit which the unit Advanced or Marched through this phase (Bases are Overlapping, even partially). The whole unit makes an attack against the chosen enemy unit (follow the description in the unit profile). These attacks hit automatically.