Warpstone Spark/Shooting Phase

{t} In your shooting phase, pick 1 friendly
CLANS SKRYRE HERO. Then pick up to
3 different friendly CLANS SKRYRE units that are wholly within 13"of that HERO.
You can add 1 to the Damage characteristic of missile weapons used by
those units until the end of that phase.
At the end of that phase,roll a dice.
On a 1, that HERO suffers D3 mortal wounds.