The pokemon flute. When you first read its text, youd probably think "Why
would I want to revive my enemys pokemon?" Well its actually a very good card
when paired with pidgey, especially useful against fighting decks. Here what
to do:

Your opponent has a cross between fighting and another type. You have
destroyed most of his lineup, but now he used pokedex to rearrange his cards.
He has all fighting pokemon now, and 1 empty space on his bench. Well put
pidgey up front, and use pokeflute. Put a  weak fighting pokemon (Machop,
Digglet) onto his bench. Now his bench is full of pokemon that cant harm you
(Pidgeys resistance)! This has gotten me out of a jam many times against my
friends fighting deck.