Tides of Shadow

All 'Grey Knight Psyker' units gain the following:
•If targeted by an enemy ranged attack made
outside of 12 inches from this unit, this unit
gains Light Cover. If that unit already has Light
Cover, they gain Dense Cover
"Caution and secrecy are our code, watchfulness and patience are our way. Hidden from the Eyes of Chaos, we strike without warning or dread"
-Canticle of Absolution