One: North Sea Kraken
North Sea Kraken is often referred to as the legendary of arena. He hits the board with a massive splash – literally. Kraken is the finisher that many decks don’t have in arena. It hits the board killing a fairly large minion, and his damage represents a third of your opponent’s total health. Kraken can very easily win games by himself, or give you such a big card advantage that it allows you to press your advantage easily. Even if he dies to an immediate removal spell, he still kills something when he enters play and takes their removal, giving you a nice two for one in terms of card advantage. It’s definitely arguable whether Shredder or Kraken is better, but I like Kraken due to its reliability and pure, raw strength.
Kraken’s biggest weakness is simply losing before you get a chance to play it. This means you won’t want to fill your deck with Krakens, as you will have nothing to tide you over until you can play them. Also, because of its high cost, many fast decks won’t want to draft this card. However, if you’re looking for a single card to finish off close matchups, Kraken is the one to do it.