Firestorm When firing a weapon with the Firestorm trait, place the Flame template (denoted as T in the weapon profile's range) so the narrow end is touching the weapon, or the firing model if the weapon is not physically represented. Make Hit rolls for each Detachment that has one of more models that are under the Flame template equal to the number of models from that Detachment that are at least 50% under the Flame template. Roll a D6 for each model that is less than 50% covered by the template - on a 5+, the model is counted for the purpose of calculating Hit rolls and allocating Hits. On a 1-3, the model is ignored for such purposes. If a weapon has the Firestorm trait and the Skyfire trait, the template only hits models with the Flyer special rule, while if it does not have the Skyfire trait then Flyers are ignored and cannot be hit.
Hits scored by a weapon with the Firestorm trait can only be allocated to models underneath the template. A model firing a weapon with the Firestorm trait suffers no penalty to its Hit rolls for targeting a Detachment within an area of terrain. In addition, Hits scored bypass Cover Saves.
Firestorm weapons cannot be fired as part of an Overwatch. As a weapon with the Firestorm trait does not choose a dedicated target, the Detachment may pick any eligible target to fire on with other weapons, including a target that is not hit by the Firestorm weapon.
Arc (Front/Rear) A weapon with the Arc (Front/Rear) trait may only target Detachments that are within the specified Arc, shown in brackets, of the firing model.
Light AT Hits scored by a weapon with the Light AT trait against a Vehicle, Super-heavy Vehicle, Knight or Titan model treat their AP as 0, regardless of the weapon's base AP value. This can prevent Hits from a weapon with the Light AT trait from being allocated to Void Shields.