I second this part…
…, but I personally like the circle, it’s swirling flames that gives my eyes trouble.
(Especially on snow/ice arena, but that’s more likely a problem with the map. I remember spectral Golems being too bright on ice arena as well.)
I think some customization options would be perfect. Or at least a few free/cheap skins for different tastes/sensitive eyes.
I think obscuring the whole affected area, especially with swirling images, is a bad idea.
In most games I played, they stick to defining the outline, and it works.
This looks great for example
I also like gas burner/stove look, with blue flames
Meteor is kinda op, you get what you deserved. Side effects as a tradeoff for power. Compare it to a real world nuclear strike, that fries optics and interferes with radio communication.