They are the rarest Pokmon card in existence
[64] Several rule changes were made to make the game terminology more flavorful, such as renaming the "in play-zone" to "battlefield"
Black-green Shelob, Child of Ungoliant is one of the best spider-typal commanders out there
Once you have a good amount, you can use the alternate commander from the deck, Vihaan, Goldwaker to transform all those Treasures into 3/3 artifact creatures that are also outlaws, giving them all vigilance and haste, both giving your other outlaws a huge boost, and your newly animated Treasure tokens the ability to swing out on the same turn
Reward Points Reward Points on Tongkam
Theres a vast amount of these cards available naturally, they go way beyond the four official metal cards that were released, covering pretty much any Pokemon that you can think of