Squiggly Curse

The shaman transforms a target into a squiggly beast.
Pick 1 enemy HERO within 3" of the caster and
roll a dice. That HERO suffers D3 mortal
wounds. If that HERO is slain by those mortal
wounds, you can add 1 to casting rolls for the
caster for the rest of the battle. If the casting
roll was a double, that HERO suffers D6
mortal wounds instead of D3 mortal wounds.