Every model is equipped with: bolt pistol; occulus bolt carbine; paired combat blades.
Once per battle, at the start of any phase, you can select one enemy unit within 3" of the bearer and roll one D6: on a 2+, that enemy unit suffers D3 mortal wounds, or 2D3 mortal wounds instead if it is a VEHICLE unit.
Each time this unit has shot, select one enemy unit hit by one or more of those attacks. Until the end of the phase, each time a friendly ADEPTUS ASTARTES unit makes an attack that targets that enemy unit, add 1 to the Hit roll.