After completing The Nightmare and meeting Cresselia, you will learn about how to fix the distortion in the fabric of space. You will have to talk to Lapras at the beach and he will tell you about Spacial Rift. I suggest trying to get lots of items because Spacial Rift is very hard to get through. After conversing with Lapras, you will go to sleep. Then, Palkia will swoop in and take you to Spacial Rift. I suggest you try to find a Hunger Seed because Palkia is really powerful. Hope I helped! ~Hendejj~
After Azurill has the nightmare.
Palkia is level 48
spacial rift
You just need to wait a while, eventualy you'll get a bad dream and then you will meet palkia soon after.
to complete Explorers of Sky, you need to defeat Darkrai (with Cressilia on your team) in dark crater after defeating Palkia in the spacial rift.
you have to defeat darkrai and have cressilea,manaphy and palkia on your team
chatot tells you about palkia and when you go home palkia comes in and brings you to spacial rift.
You can find Palkia in Spacial Rift. After you beat him, he'll ask to join your team. Say yes. You'll have Palkia on your team.
When Palkia spirits you away after you emerge from Azurill's nightmare.
You should beat both stories and get Palkia, Diagla, and Cresselia on your team.
NO, Unless you have Dialga Lv 56 and Palkia Lv 85
you have to get hit 99 then it will work.