unit takes damage
And-
damage source current order = attack/smart
damage source = "your unit" or triggering unit = "your unit"
and then what ever you want to happen
A simple but possibly incompatible way is to give each unit an orb effect like slow poison, which places a buff on attack. Then, in a damage-detection trigger, check if the unit has that buff and remove it in the actions; that way, the unit will only have that buff when it receives damage from an attack.
Of course, this interferes with allowing the units to have any other orb effects...
Correct me if I'm COMPLETELY misunderstanding what you want to do, but can't this be achieved with A Unit Is Attacked? Or are you trying to use triggers relating to Damage Taken?
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory
I will be AFK for a couple of days you guys hold down the fort while I am gone. I will be checking in on my phone but that will severly limit me. Be back saturday!