When using Mirror Image with the Mocking Demise rune, the images deal damage and have a chance to stun in an area when they die.
My question is, what exactly triggers this? Does this occur no matter how the Mirror Image dies? Does it trigger when the image dies because time on the spell is up? When it's destroyed by damage (this one seems the most obvious.)? What about when it's forced to die because you've re-cast Mirror Image?