klavier pokemon card price POKÉMON GAME sv4a 338/190 AR Wiglett Weakness Grass ×2 Resistance None None Retreat Cost Sticker Klavier Gavin Line Art

#6 Terastal Festival ex Best Eeveelution Collection (~$103 / 15,000) Terastal Festival ex is the ultimate Eevee fan set all 9 Eeveelutions receive Special Art Rares in a single High Class Pack

While not the rarest, other rare Full Art cards you can acquire from the Mewtwo booster pack are listed below

Eidolon especially works poorly with the card quality and draw stuff as well as your super low curve

Having said that, though, I havent really seen a mega that I would be willing to risk 3 points for

Despite that your odds on useful turn one Mox plays are low

There are at least some sweet cards for Brawl enthusiasts, though