Some models have 'Deadly Demise x' listed in their abilities. When such a model is destroyed, roll one D6 before removing it from play (if such a model is a TRANSPORT, roll before any embarked models disembark). On a 6, each unit within 6" of that model suffers a number of mortal wounds denoted by 'x' (if this is a random number, roll separately for each unit within 6").
If your Army Faction is Adeptus Astartes, at the start of your Command phase, select one unit from your opponent’s army. Until the start of your next Command phase, each time a model from your army with this ability makes an attack that targets that enemy unit, you can re-roll the Hit roll and you can re-roll the Wound roll.
6"
10
2+
8
6+
3
Each time this model makes a melee attack that targets a Vehicle or Fortification unit, add 1 to the Hit roll and add 1 to the Wound roll