How to make a unit interaction like Broodbrother in SC2.

[nchp1903]

To explain that, I want to make a spell based on Mirror Image. The gimmick is when the summoned illusion dies, the summoning unit will die as well and vice versa. I also want to apply it to non-summoned/non-illusion units too, if possible. Here is a trigger of mine that did not work.

 

[PiesOfNorth]

You'd have to store the illusion in a variable when it is summoned.

Your actions should be moved to a new trigger with a Unit Dies event.

If multiple instances of this spell should be able to occur at the same time, you'll need a unit indexer for it to work as intended.

 

[nchp1903]

This is just for a hero in a single player map, so I have no need for a unit indexer just yet. Still, your advice to use variables as well moving the actions to another trigger makes the ability works perfectly. Thank you for your help!