Fatal Strike
(Rule)Description: Once per battle, a unit that includes any models with this special rule may declare a Fatal Strike at the start of any of the controlling player's Shooting Phases. For the duration of that Phase, the Shooting Attacks of all models in the unit with the Fatal Strike special rule gain the Rending (4+) special rule in addition to any other effct their weapons might have. This does not replace or improve any other versions of the Rending (X) special rule already possessed by the unit and ma not be used when attacking with weapons that have either the Template or the Blast (X) special rules.