It's often compared to the now-banned Hullbreacher as being a 'feelbad' or 'unfair' card, but as long as your playgroup is fine with it, it can be a really powerful creature to use
Making an entry for every single possible combination for Krark, the Thumbless would be absurd, especially considering most of them would go something along the lines of Yeah, this wouldnt really work
Opponents haven't gained any cards, so you've gained card advantage
Other known cards include the Iconic versions of Mickey Mouse and Minnie Mouse, presumably with standard versions of the cards as well, and the long-awaited inclusion of characters from A Goofy Movie
Sometimes, the coin flips wont favor your strategy, and thats okay