If your opponent cant cast two spells, they cant turn it from night back into day, keeping your nightbound werewolves flipped until someone can remove one of these cards
Charizard (001/015) Charizard is usually the most expensive card in a set, but surprisingly, this is not the most valuable Dragon Discovery card
Make sure you identify one specific person outside the game before your joke
To make matters worse (or better, depending on your viewpoint), Agent Frank Horrigan is indestructible on attacks, making it well worth your 7-mana investment
2 Ulamog, The Defiler Foil Etched - $87.70 The top two most vulnerable cards in Modern Horizons 3 are devoted to Ulamog, the Defiler and it is easy to see why
This goes up a bit as well based on how much of an improvement having this is to the ability to keep a hand meaning most mulligans will occur on hands without this in them