You may have up to 4 Basic Pokémon cards in your deck with Unown in their names
Unown [U]
40 HP
Pokémon Power
[Undo]
Once during your turn (before your attack), if you have Unown [U], Unown [N], Unown [D], and Unown [O] on your Bench, you may return your Active Pokémon and all cards attached to it to your hand.
