Pyrax incendiary bombs

Once per battle, a Hell Talon equipped with Pyrax incendiary bombs can make a bombing run against a single enemy unit it moves over during one of its Movement phases. After the Hell Talon has moved, pick an enemy unit that it flew over, then roll a D6 for every model in the unit, up to a maximum of 20 D6. Add 1 to the results of the dice if the target is INFANTRY. For each roll of a 5+, the unit suffers a mortal wound.