Auspex Bafflers

Play this Stratagem in any Strategy phase.
The player chooses one of their Titans or Knight Banners. Until the end of the round,
the chosen unit increases the To Hit roll penalty for being obscured by 1, i.e.,
-2 To Hit if at least 25% of the unit is obscured, or -3 To Hit if at least 50% of the unit is obscured.