This is mainly down to its Cross Fusion Strike attack
Mr Mime Art Rare PSA 10
The best of these Creatures is Patchwork Automaton
Unfortunately, since Japanese cards are still relatively new additions to the TCGPlayer database, there isn't a long history of sales data to point to for these cards, but thus far, this Leafeon continues to rise in price, after debuting at close to $200, and soaring to its current market price in short order
Both Dialga and Palkia are presented as the main legendary cards in the set, and the holographic line-up consists of the Sinnoh staples such as Empoleon, Infernape, Torterra, Luxray, and Lucario
That card must be denoted clearly as a proxy and will not be allowed in a different tournament