ARMOUR OF CONTEMPT

Adeptus Astartes - Epic Deed Stratagem
Use this Stratagem in any phase, when an
ADEPTUS ASTARTES VEHICLE model from your army
would lose a wound as the result of a mortal wound.
Until the end of the phase, each time that model
would lose a wound as the result of a mortal wound,
roll one D6: on a 5+, that wound is not lost.