At first glance, all the cards that exist in the Pokmon card game universe are perfectly legal to play in tournaments
This is basically just a one shot Containment Priest that is a card instead of a 2/2, pretty reasonable
Attacking a planeswalker the player controls wont count
Usually youll only get 1 or 2 plains cards, but if you went last in your game of 4 players, you can easily snag 3 lands as early as turn 2 with no setup
You might expect the Furby cards to attract the most controversy, but apparently it's Rainn Wilson as a muscular farmer holding a giant turnip on a reskin of the Swords to Plowshares card that crosses the line
Also, being a Level 8 monster, it can be used with "Archfiend Empress" and "Archfiend Emperor" to Xyz Summon Rank 8 Xyz Monsters, or just attack en mass to win the game