Need Thought For Question!

Lately, I've been really thinking about some StarCraft modding I used to do, and my favourite mod was when I made it so that whenever this unit (usually Protoss Dragoon) shot at something, it would shoot 5 bullets at once at an area. So, I thought about it and thought I should do something like that in WarCraft 3. I at first thought I would use Barrage but then, I realized that it would only activate when there were at least 3 units and that it would directly attack them. So I thought some more, and decided that I (as in "I" not everyone else) couldn't trigger it either (a.k.a. ME=NOOB (SORTA)). Now I have no idea how to make it so that when a unit attacks, it would shoot 5 bullets (a.k.a. missiles, whatever you wanna call them) into an area around a single unit. I don't want a spell either.

So, example: An Archer shoots at a Knight. Instead of shooting an arrow right at him, the Archer instead shoots 5 arrows that might or might not hit. And if it didn't hit that Knight, it would hit a Footman beside him.

ARCHER FIRES=5 SHOTS

--> -->
--> --> KNIGHT
--> FOOTMAN

KNIGHT: GET HITS BY 3, MAYBE 2
FOOTMAN: GET HITS BY 1, OR 2

Thoughts on how to create this effect? Please, I REALLY need feedback.

The only way I could think of would be to trigger it so that whenever the unit attacks (dealing 0 damage), a dummy unit is created which casts a "Cluster Missiles" spell centered on the target unit. Problem is, that WOULD hit and damage everyone in the area... If not that, then you'd need some REALLY nasty triggering using dummy units as projectiles.

That disgusts me. This technique I often used was my absolute favourite thing to make a unit do. I expected WarCraft 3 to be able to do something like this.

you could make a trigger that creates several units that casts carrion swarm or w/e missile type spell you like towards that general direction

Mmm, but it'd would probably hit everyone in the area. You know how imprescise Carrion Swarm is...

then use shockwave (from the tauren Chierftain), last i checked it was a straight line, not a cone.

Use dummy units with the same missile art as the unit that fires, and add an expiration timer to them, and order them to do "attack ground" somewhere near the location/unit you attacked.