HELLFIRE SHELLS

Use this Stratagem in your Shooting phase, when
an ADEPTUS ASTARTES INFANTRY model
from your army shoots with a heavy bolter, a
hellstorm heavy bolter or an executor heavy
bolter. You can only make one attack with that
weapon this phase, but if a hit is scored, the
target suffers D3 mortal wounds and the attack
sequence ends (if a hit is scored against a
MONSTER unit, that unit suffers 3 mortal
wounds instead of D3).