| I think that was done with JASS I am afraid.
I do remember some guy posted some JASS code somewhere in wc3sear.ch where DotA spells were.
In Dota, it was not an autocast power. You clicked on it to turn it on and off.
There is a method I think using one of the transform spells. But that would change the display of the damage a bit. However, it could work. |