Give the unit a Buff type behaviour and use the Vital Leeched from Damage Dealt property located under the Combat tab in the Behaviour: Modification + property. You can set the amount leeched depending on the type of damage (melee, ranged, spell or splash). A value of 1 means 100% leeched.
I want it to be an ability, like unit hits target for 100 dmg, receiving 50% of the dmg dealt in health. Could I just make a validator that checks if the dmg was dealt by this ability?
I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
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