Skill damage based on unit attack damage

[BossMaker]

I've been trying to make something based off stats, like make heroes have damage equivalent to stats, but that's just the easy way out. What if I add items? What if I use damage-increasing buffs?
So, how to create a trigger that takes your unit attack power and deals percentage of that as spell damage?

 

[Rheiko]

You can't simply do it. Probably with DDS you can but that's just a possibility and if it indeed can then I'm sure it's pretty complicated.

 

[Wietlol]

You cant load the basic attack damage of a unit.
A DDS can only see the result of the damage modified by abilities, resistance, etc.
There are too many things to keep track of to make something to keep track of it.
And there is just too little gain from it.