Changelings don't copy traits

[UrsulaMejor]

I dunno. You could just make it look like the changeling has those traits when observed. Really though, while this trick exists, it's very conditional.

You gotta have a changeling, combined with someone that has the trait that lets then know traits at a glance, and either memorize other players traits or dig through medical records to compare them. Which really, if they're dedicated enough to actually use the medical records to oust a ling, I think they've earned it.

as someone who recently stumbled on the ability to do this, it really isn't that hard. I noticed a guy wasn't wearing the same clothes as the guy he ate and inspected him. when I questioned him about it, he stung me and I eventually got away. since I had examined him to look at his clothes, I knew his traits.

then when he made the same clothes mistake on a different dude, I noticed they had the same traits and realized they were the same person