IX: All problems can be solved if you just read the card. If you find a rogue deck that’s absolutely BROKEN and beats every meta deck around, double check what the card says. Chances are, you end up thinking Passimian ULP does 30 more to ALL Pokémon, not just evolutions.
X: Always listen to someone more experienced than you. As Captain Rex said during that one Star Wars the Clone Wars episode (anyone? No?), “experience outranks everything.”