Focus Magic on bowmen - stackable?

[occasionalplayer]

I wonder: Does focus magic also increase a bowman unit's shooting strength by three or does it just transform it into a magical attack?
If you had flame blade, holy weapon and focus magic on an ultra elite draconian bowman unit, what would its stats be? And what would be its to hit-level?

[Anskiy]

Focus Magic only turns the base ranged attack of a bow unit into a magical one. Said magical ranged attack has the base to hit chance of the unit, usually 30%. Magical weapons do not count as base to hit for this purpose.