The problem is it is just a bit too late and expensive
Players must use their creatures to battle against their opponent and knock out all of their Pokmon to win
While this wont allow you to cheat out too many hard hitters, you should be able to secure some great defenders or creatures that are costly thanks to their abilities
It doesn't help that Kaheera is a Cat but not an Elemental, but I'm guessing that there will be some combination of an Elemental framework of Leafkin Druid, Risen Reef, and Omnath, Locus of the Roil along with Kaheera, Questing Beast, and a few other choice creatures
The only downside to this is that your opponent gets to choose which of their Benched Pokemon to bring out
Once you get through the instructional guides, you can find many tips and reminders in them that help you in all subsequent gaming battles.