This Breath Weapon works similarly to determining the effects of a cannon shot (see the Warhammer rulebook). The maximum range of the attack's target point is 12" away from the monster and may be treated just like a normal breath weapon. After the target point has been selected, roll the Artillery dice to create a line of effect for the blast travelling in a straight line away from the dragon (using the line template). A Misfire result should be re-rolled. Any model caught in the line of the blast suffers D3 wounds with a strength equivalent to 10, minus the target's Toughness score, with the Ignores Armour Saves and Magical Attacks special rules.