The anti-Arctic Squid? Still kind of specific.
However, my main concern is the name. Obviously one would relate melting down to the word meltdown, however the word meltdown has much more to do with nuclear reactors and their lack of stability, alluding to more of an Entropy card, especially since meltdowns release radiation and "mutate". Perhaps a name change could be in store for this card? I don't know. Maybe Melt? or Melting? But Meltdown refers by definition to something very different to what I think it is you are thinking.
EDIT: Haha, couldn't resist creating a Meltdown card of my own, different concept however, if you have an issue with me using the name, please inform me and I will try to find a suiting name which is not already used.