Miasmic Bombardment At the start of the battle round, select a number of enemy units more than 12" away from every model in your army that is on the battle field. Until the end of the battle round, those enemy units are Afflicted. The maximum number of units you can select in this way depends on the battle size, as shown below.
Incursion - 1 Unit
Strike Force - 2 Units
Onslaught - 3 Units