Here's how to pick, the top five, and the math behind it
Darkrai Ex/Greninja Froakie x2 Frogadier x2 Greninja x2 Darkrai Ex x2 Druddigon x2 Cyrus x2 Leaf Professors Research x2 Poke Ball x2 Pokemon Communication x2 Potion Greninja is the original chip damage master, and it pairs extremely well with Darkrai Ex and Druddigon
Nothing that was right for me, however
Lillipup, a Normal-type Com Mon, can be found at the second area the player visits (Floccesy Ranch.) Not long after, the player is handed the TM for Return (a Normal-type move that does more damage the more friendly the user is with the trainer) and a Silk Scarf (a held item boosting the power of Normal-type attacks.) Once the Lillipup has max friendship (not hard to do by just walking around a lot,) you've got a powerful sweeper on your hands that can KO just about anything that doesn't resist Normal-type in one or two hits
If you have opened your fair share of packs from the set, you might have a good number of uncommon cards hanging around waiting to be played with
