1997 pokemon card packs Japanese Topsun Pokémon Booster Box 1997 Pokemon Japanese Team Rocket

Energy Requirements Before you declare an attack, your Active Pokmon must be able to pay for the attack

Sure, you wont be able to get more than an Amass 1 off a Proliferate (since its real difficult to have multiple zombie armies), so theres a low ceiling on the benefit

Polluted Delta: Can search for an Island or Swamp, making it able to find lands such as Underground Sea, Tropical Island, Volcanic Island, Tundra, Bayou, Badlands, or Scrubland depending on the type needed

It's part of a cycle of rare enchantment creatures from the Duskmourn MTG set which all return to the battlefield as non-creature enchantments after they're killed, making it a nightmare to remove

Of course, you can just use basics or play with dual lands that come in tapped, but in a world where the best builds are shared online, anyone making that choice knows full well that their deck is fundamentally worse than their opponents'