Pierce? bounce?

I'm trying to make a hero with a given ability whose missile goes through enemy units (like impale/vorpal blades). I tried basing the unit off a NE unit, adding a custom upgrade based off of impale (just to change button posn and such), and tried making the unit have a missile - line ability, and changed the spill distance/radius and AOE of the hero (just to be sure). But through all that, it doesn't work. So is there a way to make a normal missile attack go through enemy units (don't have room to make it an artillery type attack)

Also, I'm having trouble giving a unit a bounce attack. Again, based off a NE unit, gave it a unit - bounce attack, and gave it the moon glaive upgrade. The problem here is, when I mess with spill and AOE, the spell sometimes works. Here's what I got (somehow)

1. Doesn't work
2. Bounces and hits one unit (though the hit unit is usually farthest away then other nearby units).
3. Hits one unit, bounces, then bounces again, and HEALS the 3rd unit.
4. HEALS the second unit.

I'm really not sure how spill and AOE works with this, and the number of targets option, but I just want to make a missile bounce twice (and maybe do less damage per bounce). Does anyone have experience with making bouncing work?

Make the projectile a unit with no colision.

Durr..what will that do?

have u tried max # of targets (combat)

Yeah, it does really weird things (stated above)

Does moon glaive just up the # of targets by 1?