Mostly already answered by @chok above, but to give a full summary: This set was only available for purchase online On top of that: it was only available for a two week period On top of that: it could only be bought by Japanese players On top of that: it was TCG-wise a pretty bad set, so not a lot of players bought it On top of that: 90%+ of the sets sold were in 1st edition, so unlimited edition was very scarce On top of that: the Seviper is a Rare in the set, so isnt pulled as much as lets say a Common On top of that: Seviper isnt a very popular Pokmon to collect So yeah, although it took me 3.5 years, Im extremely happy and grateful that my Seviper collection in all Pokmon TCG languages and variations will now be 100% complete (as soon as those last two Indonesian Seviper cards have arrived in an incoming package)
Practically any deck using Amethyst could benefit from it
5 Number 56: Gold Rat Of course, the key to victory in any TCG or CCG is getting your hands on the right cards at the right time
You should be able to add 'Arthur, Wizard's Apprentice' to your collection then via booster packs
Nowadays, ETB effects define the creatures that players choose to run in their decks, so much so that there are dozens of different commanders bent on abusing ETB triggers