Alright, I'm more the fan of minimalistic designs, so the first approach to the Phantom Banner is very minimalistic. I'll try and go for a more complex and fancy version tomorrow, when I've had some sleep.
Simple, square box, complete with faction name and a shiny logo.
As transparency seems to be the trend right now, I made another version with smoky fading into the nothingness:
I created it with Caylith's signature as a reference: blue, cold tones, lots of black, smokey brushes. The colours can of course be changed, as well as the style of fading to the background.