Cards I hate to go up against - Number 5

This guy is the jerkiest of jerks.
You look at the tank you're against... the tank doesn't have heal, you've got this...
You score a great hit, you're feeling confident... and then somehow the tank heals up even though he doesn't have heal... all because of the sneaky Crustacean King hiding in the deck.

Since he didn't attack, you didn't notice him in the deck, until your opponents tank just doesn't die no matter what.

So tricky!
I haven't quite found the answer to deal with the King of Crustaceans, hope for a lucky snipe hit I guess...