How to make ?non-targeted missiles??

Hi there

I'm working on a serious map with some other guys and we've made tons of custom spell based on triggers. However, this trigger/spell we can't figure out how to make.

The 1st and “simple� version:
It's supposed to do the same as the arrows the Amazon in Diablo II / D2LoD fires of. If no units is targeted, and you're shooting anyway, the missile (arrow) will just continue in the direction you pointed.
Now, if a hostile unit moves into this missile, it will be hit and take damage, just as if the missile was targeted at it from the beginning.
The spell can be based on spells as: Stormbolt, Shockwave, Shadow Strike, etc. (doesn't really matter – your decision).

The 2nd and more complicated version:
This is supposed to do almost the same as the previous spell, however, multiple arrows will be fired of now, just as the Amazon Skill “Multiple Shot� (from Diablo II again). And again, you won't necessarily have to target a unit to fire it of, but if a unit walks into the arrows, it will take damage, just as I mentioned before.

Please help me and the crew out here, we simply can't make it work right!!! :'(

Thanks in advance
DwayneNightseer & Crew

forget that, you cant fire this spells to anywhere and they can't get a new target after they are fired...

you will need dummy units, thats the only way, i think multi shot is easier to make whit dummy units

Yeah you need to make dummy projectile units, add locust ability, then order them to move to the detonation point, then you need to use a "units in range" check with a small radius around the unit to find possible things to hit, when a target is found you deal damage to it and remove the dummy projectile unit. (you can also use the kaboom ability for explosive arrows)

Thanks for the suggestions – this in fact is exactly what we've tried, however, we can't make the dummies keep their direction if they “see� an enemy unit. Then they will run after it and try to attack it (looks kinda' stupid/funny).
And the “spray missiles trigger� (Multiple Shot) is screwing this totally up…

If someone would make this work for us and send a trigger code – maybe a map – we would be so thankful, and as the “price� for helping us, your name will be added to the “Credits Section� in the map and on our homepage.

Thanks in advance