In Legends: Arceus, Dialga and Palkia received new Origin forms, so new Mega forms for Yveltal and Xerneas would be a perfect mirror to the previous game. The only existing Legendary Pokemon with ...

If you have one in your Pokedex, then Mega Rayquaza is the best counter for Palkia but any strong Dragon ... Rayquaza, Primal Groudon, Shadow Gardevoir and Dialga are good alternatives if you ...