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Is it correct to assume that the UNIT_HEALTH event would cause a script to be fired any time a unit health changes - meaning, target health, your health, party health, raid health, etc. etc.?
What I'm trying to figure out is an eloquent way to have a button appear when, say, something can be Executed. The script itself is pretty straightforward, using UnitHealth("target") < 20. The part I can't get past is how to set up the event to run the script. What I really need is an event for the target's health changing, only. It just seems there has to be a way to do that, without tying in to every unit health change that is happening. Maybe I'm assuming that lots of unit health event firings is a performance issue, and it really isn't that bad?
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