Shock and Awe

ADEPTUS ASTARTES SHOCK GRENADES
or LAND SPEEDER STORM unit from your
army is selected to shoot. Select one enemy unit
within 6" of that unit. Until the start of your
next turn:The selected unit cannot fire
Overwatch or Set to Defend.Each time a model
in the selected unit makes an attack, subtract 1
from that attack's hit roll.