Yes if the top 3 cards contained more than 1 of the choices PokéNav allows you to get. If there is only a basic energy card when you use PokéNav, you take that card and put the 2 others back. But if there is another card you could take instead of the energy card, you can take that card and then put the 2 cards back with the energy card on top. Then you could Crush Draw. Oracle, a card that lets you search your deck for 2 cards and put them on top of your deck, would be a better card to use (especially if you have multiple Walreins out).