In hgss, one way to get diagla and palkia is carrying the event arceus provided in the 2009, the 12th movie to the ruins, found a small house and talk to the people inside, and then comes the event.
But the latest pokesav doesn't provide the edit of mystery gift, means it won't be easy to get diagla and palkia.
Here is what I found the possible ways to trigger the event.
There is a software called mystery gift editor, the latest version works on hgss, here is the download website:
http://projectpokemon.org/forums/showthrea...or-(v1-4-bta-3)
AND we also need the pcd and pgt files of the event pokemon, I found this website may contain all the event pokemons ever provided by official:
http://projectpokemon.org/forums/showthrea...tion-Collection
using the mystery gift editor import the pct and pgt files, and enter the game you can find a deliveryman at any sotre, talk to him and he will give you the event pokemon, almost the legal way to get it
hope to help
But the latest pokesav doesn't provide the edit of mystery gift, means it won't be easy to get diagla and palkia.
Here is what I found the possible ways to trigger the event.
There is a software called mystery gift editor, the latest version works on hgss, here is the download website:
http://projectpokemon.org/forums/showthrea...or-(v1-4-bta-3)
AND we also need the pcd and pgt files of the event pokemon, I found this website may contain all the event pokemons ever provided by official:
http://projectpokemon.org/forums/showthrea...tion-Collection
using the mystery gift editor import the pct and pgt files, and enter the game you can find a deliveryman at any sotre, talk to him and he will give you the event pokemon, almost the legal way to get it
hope to help