Madness

Pick 1 enemy Hero within 3" of the caster and
visible to them, and roll a number of dice equal
to the combined value of the Attacks characteristics of all melee weapons that Hero
is armed with.
For each 5+ you can inflict 1 mortal wound on
1 enemy unit within 3" of that Hero (you can
choose different units to suffer the mortal
wounds if you wish).