I'm bored, and was thinking with all the challenges that RoE gives there are a few that are annoying, and some that are common.

But... what would be your nightmare challenge?

Perhaps: In /say, /tell, /linkshell, /unity, /shout, or /yell: type a sentence that is grammatically correct

or

In a 24hr time span, defeat every ZNM in the game.

Have fun, go nuts.

Which RoE would completely suck if they were real?