Unless you have a way to turn this combo into a win on the spot, youll need to pass the turn before taking all of your opponents out, as your tokens will have summoning sickness
With it being one of the last Mewtwo cards released by Wizards of the Coast before they no longer were in control of the game, it's a piece of nostalgic history that demands a high value.
Its part of the trio with Articuno and Moltres, which means many collectors are hunting it as part of a set, further driving demand
Now for the main event: the unboxing
If you suspect that you have a misprint card, compare the cards characteristics against a database of known error cards and contact a reliable member of the Pokemon community to verify your card and assess its value
This can make the number of coward rack up pretty quickly, and you get an additional bonus for doing so