Eye-biter Ash

Once per battle, at the start of the combat phase, you can say that the bearer will hurl the Eye-biter Ash at a foe. If you do so, pick 1 enemy unit within 3" of the bearer and roll a dice. On a 1-2, nothing happens. On a 3-4, subtract 1 from hit rolls for attacks made by that unit for the rest of that phase. On a 5+, subtract 1 from hit rolls for attacks made by that unit for the rest of the battle.