Help with a Wave Spell

[GoatHorns]

Hi guys,
I was trying to create Dazzles Shadow Wave spell from Dota.
However I have no real idea how to do it ;S

The spell itself is a basically a Healing Wave but it damages enemy units around the units that are healed/affected by the Healing Wave.

My first try was to do it with Channel and mass trigger it but I couldn't create the wave animations correctly (Create Lightning, I used for it). So, I was searching for another idea. And today I finally got it: Just use heal spell as a base spell and add a random buff to it. My trigger would have damaged all enemy units around the unit with the buff. .. well, then I noticed that I can't add a buff with healing wave x_x
Was one of my ideas already the right way or do I need another way to realize that?
I hope someone can help me.
Thank you in advance

 

[WolfieeifloW]

You have to trigger the entire spell, yes.
You have to use "Pick random unit in range" things to get the ally to heal;
Then after picking the ally, pick all units in range of that ally and damage them (Using the "Damage Target" action) .

You can use a dummy to cast a modified healing wave that does the heal for you.
Create it at the caster, and make the dummy cast it on the picked ally.
Then create the next dummy at the picked ally and make it cast on the next picked ally, and so on.

 

[GoatHorns]

Bah, that seems alot of work, but thanks, I gonna look how I can figure that out. Thanks.

 

[ImmortaL_GoD]

I'm also trying to make this, did you figure it out by any chance?