[Trigger] Making a unit immune to only 1 certain spell?

[Nackel]

I have a dummy casting "Howl of Terror" on units in range every 3 seconds.
The spell itself doesn't do anything, but it puts a "Scared" buff on those units which i have a few triggers that detect units with the "Scared" and orders them to flee and changes the ownership of that unit until the buff is off.
My question is, I have 3 types of Heroes that are should be immune to being "Scared", but if i give them Magic Immunity, it makes them immune to A Lot of stuff they shouldn't be immune to.. Is there a way to make them immune to just that spell or just the "Scared" buff?

 

[Rmx]

Add heroes to a Unit Group ... called .. ? Heroes ?

Then every 3 second someone casts "How of Terror" Add the heroes around the caster of the howl ... into the group Heroes ... then .. remove How of Terror Buff from them in the other trigger....

 

[Restor]

I would make it like this:

Let the dummy cast howl of terror_1, then pick every unit within area which has that buff, and is NOT unit type of hero1 or hero2 or hero 3 and make them flee



just give there condition that checks unit type of buffed unit

 

[baassee]

Check the unit-type, very simple in the conditions and if it has the buff.

 

[jawawaQ]

Try this:

Howl111 - Affects non-ancient units

If you want the unit not to be affect by it, set its classification to Ancient
That way it will not include the effect.
No Triggers done, just variables.