to answer, there's a load of unit lol. It's a pokemon map, so far, I made 138 of them <_<
There's some ability like "Rain dance" for exemple that create a rain for some time, that boost water pokemon damage (hero damage in my map). That was what I was aiming to do.
Well you can add a list of units you know have the attack type of your preference
E - Unit takes damage
C - Unit type of damage source equal to X and Damage source has Aurabuff equal to true
A - Set life of unit to (life of unit - (damage done*0.1)
However, spell damage also receive the bonus