This is a Creeper card that works in any deck, but you might want to make sure that deck has a way to get rid of Creepers...
This card says, "You cannot win if you have this. During your turn you can move this to another player if you sing some of that song about spiced ham."
This was published in 2017 as a special for various consumer conventions.
The card text is hilarious and it does exactly what it says, you literally can't win while it's sitting in your deck. Pairing it with a way to discard Creepers keeps things from getting stuck, so my games have been way more fun.
Didn't expect a card that literally stops you from winning to be this fun, but the "during your turn you can move it" clause makes it a weird little puzzle every game. It slots into any deck and my group now argues over who gets stuck holding it. Genuinely one of the better junk cards I've picked up
I was skeptical about the whole "you cannot win" drawback, but it honestly forces you to build smarter around Creepers rather than just stacking cards. The clear warning text at the top is a nice touch, and it's made my matches way more interesting.