Area markers for boss fights

Level 1
Oct 19, 2012

I've been looking for some 'Area markers' for boss fights for some maps I've been making. I have no idea how to make custom skins / models, so I'm hoping someone will see this post and help me out.
I need circles... Kind of like Auras, but a unit model. Preferably red, multiple sizes if possible. (as I said I have no idea how to make these, so I don't know what kind of effort it would take.)
You know, in World of Warcraft when a boss uses an ability, lets say "Multiple Flamestrikes" around the boss room area, some red circles appear on the ground indicating where the ability is being cast at. That's what I need.