Adding hero abilities to non-hero units

[Madoka]

Are there any repercussions to adding hero abilities to non-heroes?

What I want to achieve:
A custom item with an active Entangling Roots ability that can target magic-immune units (after all Entangling Roots seem to be a physical effect)

How I intend to achieve:
- The custom item will cast a channel-based physical spell which creates a dummy caster
- Add a custom ultimate Entangling Roots hero ability to dummy caster and order dummy caster to cast on target

I've tested this method and it seems to work, except the Entangling Roots do no damage to magic immunes (small problem since the damage can be triggered).

So I'll like to know if there are any weird problems that arise from giving hero abilities to units that are not heroes and also if there is a better way to make native abilities (such as storm bolt, drunken haze, etc) target magic immunes, since WC3 only has 2 native physical abilities (web and ensnare).

 

[vypur85]

How I intend to achieve:
- The custom item will cast a channel-based physical spell which creates a dummy caster
- Add a custom ultimate Entangling Roots hero ability to dummy caster and order dummy caster to cast on target

Why don't use Entangling Roots as the active spell in the first place? And you can change it to unit/item ability, if you want to. Not sure how it would affect anything. Unless there's something that I missed out.

Anyway, I don't think adding Hero ability to normal unit can cause problem (so far...).

 

[Madoka]

Why don't use Entangling Roots as the active spell in the first place? And you can change it to unit/item ability, if you want to. Not sure how it would affect anything. Unless there's something that I missed out.

Anyway, I don't think adding Hero ability to normal unit can cause problem (so far...).

Because I haven't figured out how I can make an item cast an ultimate hero ability.

The ultimate status is crucial because I need the ability to able to affect magic-immune units. So, unless there are 'ultimate' item or unit abilities, the next best option is to give it to a dummy caster to cast.