Know of any easy ways to train my pokemon? I beat the Elite 4 and I have a new team id like to train.
I use horde battles to train my Pokémons. They can be easily grinded to Lv.60 by battling Spinda/Victreebel/Trevenant/Durant hordes. (4000-6000 exp. points per battle, if Lucky Egg is used and Max Affection) Use an attack that hit them all like Surf/Bulldoze/Discharge/Heat Wave etc and the Lucky Egg. Plus, since you’re battling a lot of Pokémons, you can get a shiny one pretty fast! Hordes battles are also much faster than Super Training for EV training, here’s the Serebii page about Hordes Battles to help you out even further.
After you’re like Lv.60 or so, you can go off against the Elite Four again and again! It’s great to get money and your Pokémons will gain some more levels there.
I’ve also heard people using the Battle Chateau (Not sure of the name though, it’s the battle facility on the same route as the Day Care) for grinding or even wild Audino in the Friend Safari. I’ve haven’t tried any of those methods, but I’m pretty sure those would be effective too.
Good luck for your leveling, and thank you for your ask!