Nothing like that feeling of coming out with a W
Here is a great example, In theory there are so many different versions of the please discard
1 Black Lotus The legendary Black Lotus has been the most expensive MTG card for a while, though its price fluctuates with the market
You could consider a few more mill cards like Court of Cunning or Psychic Corrosion to ensure your opponents actually have enough cards in their graveyard to exile but again: Umbris tends to grow large on his own
They don't have to attack the same player, planeswalker, or battle that Calamity is attacking, nor do they have to attack the same player, planeswalker, or battle as each other
Hydreigon ex #240 (Pokemon Surging Sparks | Pokemon Cards) prices are based on the historic sales