~All the answers to your heroglow questions~
If You're slow on Triggers:
To attach this, to any unit, make a custom spell(For the Sphere spell, Human, unit). Changes the "Art - Missle" catagories to 0, None, False, 0. Change "Art - Target" to the model file of the hero glow, then change the "Art - Target Attachment Point 1" to "origin", and clear the other two strings. Change the number of attachments ("Art - Target Attachments") to 1. Name your spell to something such as "Hero Aura" and then add it to your unit.
(Note: Make a trigger that so if a unit of this type is built or summoned, its coloring is changed to the color of the player. that will make the hero glow stay the same according to players.)
For Talented Map Makers that just dont get it:
The trigger will look like this:
Unit - A unit Finishes training a unit
Unit - A unit Spawns a summoned unit
((Unit-type of (Summoned unit)) Equal to Type of Your unit) or ((Unit-type of (Trained unit)) Equal to Type of Your unit)
Special Effect - Create a special effect attached to the origin of (Summoned unit) using Your Model
Special Effect - Create a special effect attached to the origin of (Trained unit) using Your Model
Note: Make a copy of the condition for every unit with the hero aura.
Hope that helps. Hope someone reads it. Hope i can get to sleep tonight thinking about the butterfly effect which i watched last night because i am still thinking about the course of my life and what would happen if i could change it.