Blasted Standard

Use this Stratagem before the battle.
Choose one of your TZEENTCH models with a
Daemonic Icon.
That icon is upgraded to a Battle Standard. In
addition to its normal ability, the power of the
banner can be used once per battle, at the
beginning of any Psychic phase. When used,
roll 9 dice; for each roll of 6, the closest visible
enemy unit within 9" suffers a mortal wound.