Validate the orgin of a behavior

[Muhahahahaaa]

hi

does anyone have an idea how to validate the CASTER unit of an behavior that is on a unit?

 

[PSGMud]

Source?

 

[Muhahahahaaa]

i give you an example:

Unit A cast a skill on unit B and gets buff C
Unit D attacks unit B, how does unit D know where buff B comes from?