Under a Killing Moon

Under a Killing Moon has a casting value of 6"
and a range of 24". If successfully cast, until your
next hero phase, if the unmodified hit roll for an attack made with a melee weapon by a friendly
Vyrkos unit wholly within range of the caster is 6,
that attack scores 2 hits on the target instead of 1. Make a wound roll and save roll for each hit.