Tide of Shadows

Whilst this Tide is dominant, a unit with this
ability receives the benefit of cover to its saving
throw even while it is not entirely on or within
a terrain feature. When resolving an attack
made with a ranged weapon against a unit with
this ability while it is entirely on or within
a terrain feature, subtract 1 from the hit roll.
The psykers wreathe their forms in
the ever-shifting maelstrom of the
immaterium.