Scariest objects?

What objects would you say were the more terrifying of the series (seeing someone use them on someone else or getting it turned on you, or whatever.)

I'd have to say the eye and the deck of cards. The key/room is kind of scary in that you don't want to get shut in it and such, but that's easily avoided.

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I'm not a Burtonite or a Nolan fanboy. I'm a Batman fan.

I believe in Harvey Dent.