[Trigger] Gain permament stat whenever unit dies.

[Fakuspakus]

So I want my hero to gain permanent stat bonus whenever nearby unit dies.
I got it to work with Attribute Bonus spell, I am increasing level of it whenever unit dies BUT the first time it triggers game freezes for everyone for about a second (Its caused by huge amount of levels I made in that ability)
Is there alternate method for this?
I am thinking about adding tome to hero and make him use it instantly, but theres gonna be a problem when he has full inventory.(I can temporarly remove last item and then add it back) but it seems like overcomplicating everything.

Does anyone know a simpler method to do it?

 

[Rigborn]

Why dont you use

• Hero - Modify Strength of (Killing unit): Set to Strength of (Killing unit) + 1

 

[Fakuspakus]

Thanks, I was looking for something like this but in 'Unit' section. I feel dumb