What does Revenge do?

As the title says, what does the ability 'revenge', the one the Space Fell Orc (Firebat) has, do?

maybe you could find out for yourself? im tired of people constantly asking questions to things they could find out in half the time if they did it themselves...

Alpha is correct. It has to do with the critters going boom boom when you click em enough times.

I knew revenge had to do with critters and such, but how can i make it work on normal units?

Then why the heck i wonder is it in the ability menu? I once opened the credits map and i saw a trigger that had it queue the Revenge ability, perhaps by trigger?

Yep, i made a test map and if you do it via triggers you can make any unit go *Boom*.

Thanks Alpha, your help is appreciated.