Yeah I'm guessing thats a mistake. Also, just as an FYI, playing the chimera removes any and all status effects as far as I can tell (including infections/etc), abilities, and immortal status. It is definitely a very interesting card, and I'm sure some people will come up with very inventive decks to use its ability. It definitely has the potential to be a great finisher for many rainbows or gravity decks, simply due to making all your 1/2 hp creature and/or frozen/delay'd creatures all attack at once with no damage reduction. It may even be able to help with things like getting around miracle's miracles (presuming he has his jade shield out and thus doesnt think you're going to be able to kill him, but with everything getting momentum at once you can). Definitely will be an interesting card.