I have a Killer Combo for you: Lass + Pokedex + another
trainer

The key behind the combo is say you use Pokedex. You find
that the next 5 cards coming up all suck, and you're
probably going to lose with them. Answer: Use your lass! You
then have to shuffle that other trainer in... but it allows
you to shuffle your deck and hopefully get a better stack,
which can make the difference in a close game.