MERCY IS WEAKNESS

TARGET: One ADEPTUS ASTARTES unit
from your army that has not been selected to
shoot or fight this phase.
EFFECT: Until the end of the phase, each
time a model in your unit makes an attack
that targets a unit that is below its Starting
Strength, that attack has the [SUSTAINED HITS 1]
ability, and when making such an attack, if
the attacking model is a VEHICLE, a successful
unmodified Hit roll of 5+ scores a Critical Hit.