Mastery of the Shadows

Models in this unit are treated as having the
benefits of Light Cover and Heavy Cover
(see the Warhammer 40,000 Core Book).
Each time a ranged attack is made against
this unit (excluding Monster units), if the attacker
is more than 12" away, then this unit is treated as
having the benefits of Dense Cover
(see the Warhammer 40,000 Core Book).