Hammer of the Heavens

Once per battle, in your Command phase, if the bearer is on the battlefield, you can use this ability. Select one point on the battlefield and place a marker on that point. At the start of your next Command phase, roll six D6 for each unit within 6" of the centre of that marker, adding 2 to the roll for each unit within 3" of the centre of that marker: for each 4+, that unit suffers 1 mortal wound. The marker is then removed.