Part of that scarcity is due to it being a Japan-exclusive card, one released before the series became the massive hit it is today
As a result, if youre going this route, youre best served by trying to pick up the best monocolored cards you can in the early packs, giving you enough flexibility to move in on whatever Return to Ravnica guild seems to be open late
As a sorcery, you may pay the mana cost of a locked door to unlock it.) When you unlock this door, return all creature cards from your graveyard to the battlefield
Its the true Holy Grail of Pokmon card collecting with only one PSA 10 copy known to exist
At the time of its release, there wasnt a single meta deck that wasnt running this at three copies
All of them will be legal for play in the Modern Constructed format -- but which cards are the most valuable