mtg you can have any number of cards Karumonix, the Rat King - Phyrexia: All Will Be One You Can Run Any Number

Sorry, no consideration to Sealed, Draft or casual this time

Here are some highlights

While his downtick isn't quite as strong as Chandra's, it does have synergy with the Vampires deck, provides some nice reach with flying, and can pad your life total

In subsequent rounds, you get to choose between putting another card on top of your last to form a stack or bidding on how many played cards you can flip over before you find a skull (beginning with your own stack, but from any other players stack after that)

With just one unblocked hit because of its trample and infect and power of 11, an opponent can instantly lose the game

But as it looks now, it does seem like this is one of the MTG battle cards built for the original purpose of being a Commander-centric political piece