gyrados pokemon card - Gyarados - 6/102 - Holo Rare variation to centering Gyarados (022/078) [Pokémon GO]

Ancient Den: The Metal Citadel Good for: Artifacts Matter, Artifact Reanimation, Affinity for Artifacts Ancient Den may look like a humble land that taps for 1 white mana, but its artifact supertype is so powerful, weve not seen an artifact land that enters untapped and taps for colored mana since the cycle it was featured in

The power here isnt in either of those modes specifically, but rather that this card is super flexible

Abzan, Jeskai, Temur, Mardu, or Sultai

Just like that card, this card actively cannot win you the game and its only effect is to force a draw

For example, Sylvan Library is $0.02 on Magic Online and $45 in paper

This is exactly what got it banned in Kaladesh Standard only a few months after its release