HI dont know if u can call this an exploit more a bug but never the less i recently found that when dueling a friend etc on ur mount u can still use "replenish mount " when in combat and recieve a quick aura flash of the animation. But whilst dueling a guildy i was spamming it and after being defeated and dismounted the glowing aura remained
[ame=http://www.youtube.com/watch?v=vcjUpE-WpCA]YouTube - Argent glow aura[/ame]
It also seems that my guildy nor no1 else could see this glow only i could. Btw my lag and fps is fine i did mouseover but video quality is shit.