Death To The Alien!

The vehement hatred that the Deathwatch feel for their xenos foes is a potent weapon in its own right.
Use this Stratagem in the Fight phase, when a DEATHWATCH unit from your army
is selected to fight. Until the end of the phase,
while than unit is within Engagement Range of
any TYRANIDS, AELDARI, ORK, NECRONS
or T'AU EMPIRE units, add 1 to the Attacks
characteristic of models in that unit.