Indomitable Engines

Use this Stratagem in any phase, when an
ADEPTUS CUSTODES VEHICLE or
ANATHEMA PSYKANA 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.