Well. I have red rescue team but it's still the same. First off you need to recruit articuno. I did and it was very easy. Then get it to level 56. Make sure it knows powder snow. Then get a blastoise to level 40. Link the moves water gun and bite in that order. Make articuno your leader and blastoise your partner. Just keep using powder snow the whole fight and it will take you about 3 turns to kill it. If you want to recruit it get to the 39th floor right by the stairs. Make blastoise your leader and say farewell to articuno. Throw an item while it's far away. when it's close start using that linked move. Make sure your a gold rank or higher. There is a 95% chance it will join your team.
The only way to get Kyogre on your team is with a Friend Bow
kyogre
You can get Kyogre in Stormy Sea, 40F. You have a 50% chance of recruiting Kyogre to start with, if you defeat it.
go to stormy sea and on the 40fl you will find kyogre P.S. you will need dive
Kyogre is a Water Type Pokemon. Water Type Pokemon are weak against Electric and Grass Types.
it is impossible
after you defeat groudon
knowwhere
Defeat them while you're in their dungeon.
It's Kyogre the first time you go there. He is at level 25 and if you defeat him, he will join your team. From then on, there won't be anything there.
it comes with the pokemon (buy one get one free^-^)
you find lots of shelgons after you defeat artucuno.