Overall, the legendary double-faced Spider-Man creatures are all popular characters from the comics and their "secret identity"
If you find one, your opponent can't win because your one card invalidates their entire deck
Technically the term comes from the original Vintage deck titled $TK4S (The Four Thousand Dollar Solution) by Scott Lemenager
10 Agatha Of The Vile Cauldron Free Activated Abilities For Your Creatures Even without additional counters or perpetual effects that increase its power, Agatha of the Vile Cauldron can create powerful combos by reducing activated abilities by just one mana
There's plenty of incidental equipment synergy to take advantage of too
So, a little snapshot of one year: 2025 produced 6,664 unique prints in paper, the heavy play of 3,249 versions on Arena, and 5,052 cards on MTGO