Adeline is a powerful 3 drop Human Knight with power equal to your creature count
These cards represent great mana sinks and token generators all in one
It's theoretically possible that, if you were to weigh literally thousands of packs to choose your heavy favorites, and bought hundreds of them, you might get a slightly higher pull rate of rare cards than if you bought the same number of random packs - but I don't recommend it, for two main reasons: Most game stores don't permit you to weigh individual booster packs before buying them - mostly because it takes a long time and holds up the line
Ultra Pro Eclipse Sleeves This is another quality outer sleeve option, with similar advantages to those above
Remember that Mega Evolutions function differently from other cards (including EX) in Pokmon TCG Pocket, and reflect the new rules set by the Mega Brave and Mega Symphonia sets in the physical TCG: Knocking out a Mega Evolution card rewards you with 3 points, granting you an instant win in TCG Pocket
The higher your level, the tougher it is to beat Joey