@jonts26, I had thought about that previously to make a modified puzzle from yours and the answer is: Madman or Trusty Steed.
They aren't in the supply.
Necropolis also isn't in the supply.
Another one: Assume there is a card with the text: If you gain this, you immediately win the game.
And this hypothetical card costs $100.
What is the least amount of cards you need to have in play to be able to afford this mega card?
Example: KC-KC-KC-KC-Death Cart-DC-DC-DC-DC-DC-DC gives 3 * 5 * 7 = $105 with 11 cards in play.
Can you do better? I have some ideas how to improve, but I'll let you guys have a go at it.
Limits:
- No Pirate Ship (you could potentially make PS worth $100 on its own)
- No Philosopher's Stone (same deal, although there likely aren't 500 cards in the game)