How do you get dielga and Palkia in Pokemon platinum?

Answer 1

u have to have beat the elite4 and u need to have the national pokidex i think

Deep down in some cave in Mt. Coronet u will find two pokeitems: the orbs of palkia and dialga. Once u got those (check other websites to see where they are) go to spear pillar. Advance to the square on the ground. On the left there will be a blue portal. talk to it and say yes. dialga (the blue one) will fight u. Defeat or capture it, then go down till u pass the door to inside the mt coronet. right away go back to spear pillar. on the right of where the blue portal was, there is a pink portal. talk to it and say yes, then palkia (the pink one) will battle u.

hope this helps check vids to see exactly how to do it.