Her strength lies in her attack trigger, where you exile the top five cards of your library and may cast an artifact from among them, which also gains affinity for artifacts
If the chosen permanent is a token, Copycrook copies the original characteristics of that token as stated by the effect that put the token onto the battlefield, with the listed exception
You can follow up with Greninjas respectable Mist Slash attack, letting you deal up to 80 damage in a turn, but generally, you want to use its ability to take down weaker Pokemon on your opponents bench
Its important to understand these factors so you properly price your cards and dont get ripped off or overcharge
Both have some errata and errors, which actually dont all line up with the English versions
To maximize this Pokmons potential (150 DMG), youll need to have Wishiwashi/EX all over the Bench