Neil speaks the truth. We seem to be facing a flood of whataboutery and hypothetical edge case stories of X Cards from folks who never use them. You need both safety tools AND common sense.
Guy Milner (BurnAfterRunning / Unconventional GMs)
It doesn't matter about their characteristics. If someone's taking the piss, you call them out. If someone is x-carding a dice roll, then they get a one way trip into the sea.
Only roleplayers, with their fascination with exact rules could take a tool built to guard against accidental harm and