Put the coin on Jirachi. Use one desire to put the searched card on top of your deck as your attack. Use the amulet to draw the card. It's an intensive combo that I would not rely on.
I'd rather start with Smeargle or Stantler.
Of course Wager messes with most any cards that let you arrange your deck or put cards in your hand.
Actually I asked a Professor from the prerealese tournament from there and he told me that, since the pokemon is going to be knockout the next turn, it knocks out the defending pokemon at that point, so no matter what you do, the oponenet still loses a pokemon as it says the defending pokemon, thus not specifing who will be knock out(of course he can retreat, and the new defending pokemon will be knock out). For that reason he deserves 9/10