I've seen this effect in the blue room on snowbound, but I was wondering how to do this effect on avalanche. Bungie.net : Halo 3 File Details
I have an effect similar to that one, but its on blackout. put on gloomy and old timey, and then throw down a flare. the effect speaks for itself.
There's an Avalanche variant that has 2 boxes glitched outside the boundaries where the lighting glitch happens. I'll put it in my Fileshare for ya. Cant do it though until I get home from school.