Use Palafin as a very strong attacker since it can deal 210 damage for only 2 energy and then get around the downside of having to switch by using Gengar. Additionally, we can use Iron Valiant between switches to get an extra 20 damage and then switch back to Palafin for free thanks to our Future Booster Energy Capsule. We can also use our numerous switching cards like Switch, Rescue Board and Jet Energy if we can't get a Gengar or Iron Valiant + Booster Energy.