[Fern]

Use the force-end-battle verb on someone inside a fight that's currently displaying a white screen animation. (I.E Eclair Lacroix)
It'll make the white screen get stuck until you relog.

Steps to replicate:
1. Watch someone in a fight where Eclair Lacroix gets used
2. Use force-end-battle when the screen is fully white
3. Embrace the light