3-2-3 means...
If the person types in a decklist...
3-2-3 empoleon, it means: 3 Piplup, 2 Prinplup, 3 empoleon!
DF and on? Try for Dragonite ex. I can see that becoming powerful this season as it has no weaknesses, stops supporters which means good bye speed for Mario and Quicketurne and it can OHKO Kricketurne and Lucario and can snipe the bench! Also due to the fact that it has no weakness it is a perfect combo for lake barrier.