With the recent supposed leak, it is all but confirmed that Modifiers will be in the new raid.
Now, picture this. You're in a mirrored room. All you can see are your reflections near and far. Suddenly, you hear the clicking of a Stealth Melee Vandal. You remember that Lightswitch is ON. You see nothing. Then..red dots EVERYWHERE!! Hordes of Vandals coming from every direction.
TL;dr mirrored room, Stealth Vandals, Abyss style fighting, Lightswitch.