Put a Pokémon from your hand face down in front of you. Your opponent guesses the type of that Pokémon, and then you reveal it. If your opponent guessed right, they draw 4 cards. If they guessed wrong, you draw 4 cards. Return the Pokémon to your hand.
When you play this Pokémon from your hand to evolve 1 of your Pokémon during your turn, you may search your deck for a Trainer card, reveal it, and put it into your hand. Then, shuffle your deck.