Overcharged Las-Cells

KASRKIN or MILITARUM TEMPESTUS
unit from your army is selected to shoot.
Until the end of the phase, each time a model
in that unit makes an attack with
a hot-shot weapon, an unmodified
wound roll of 6 inflicts 1 mortal wound
on the target in addition to any normal
damage.
A unit can only suffer a maximum of
6 mortal wounds per phase as a result
of this Stratagem.