Flakk Missile

Flakk missiles are designed to eliminate light aircraft by unleashing a payload of shrapnel that shreds armour and ruptures vital systems.
Use this before a Heretic Astartes Infantry model attacks a unit with Fly with a missile launcher. You only make a single hit
roll with the weapon(s) in this phase, however, add 1 to the hit roll and if it hits,
the target suffers D3 mortal wounds.