[quote=@TheUnknowable]
There's a word for using things your character shouldn't know, but I don't remember it.  Power-playing maybe?  I don't see it much, though.
[/quote]
Meta-gaming

It's a bit tricky sometimes knowing what information your character should or shouldn't know. The simple rule is that if no-one has mentioned it to them directly then they don't know it, unless they would've been able to learn it at some time in the past through reasonable means.

For instance, Kismet's abilities let her know something odd was under Adamar's robes, but since she's never encountered a lich before (at least no reasonable opportunity to have met one was mentioned in her bio) then all she can say is that he feels wrong in some way. However if at some point in the past she [i]had[/i] encountered a lich she could've gone "This feeling reminds me of that time. He must be a Lich, or something similar."

Having a random stranger blurting out unknown information is a little bit of a cheat, especially as no details as to who he was or how he could've discovered the information wasn't presented.

[quote=@TheUnknowable]
"...Sleep lightly, or you might wake up with a skeletal dog humping your leg."
[/quote]
[sub]...I should be so lucky...[/sub]