Get the seal case in solaceon (the house you can get to by jumping down yhe 3rd ledge) then buy some seals from sunnyshore go o to a PC and choose Your PC ball capsules.
In the MooMoo Farm on Route 38, give the miltanks oran berrys to heal them, and one of the girls will give you a seal case.
you have to give milktank 10 oran berries to get it also you should stop playing Pokemon
5 or 6.
in Pokemon heartgold go north from olivine city you should see a farm go in it and feed miltank oran berries than talk to the girl on the right side she will give you a seal case.
go to soleacon town.go to the house near the ruins.Talk to the woman and she will give you a seal case.
You will meet a kid that is in the Solaceon Ruins that will tell you to go to his house. His house is in between Solaceon Town and the Solaceon Ruins. You talk to his mom and she will give you the Seal Case. P.S. Talk to the kid kid and he will give you some things for the Seal Case.
She gives you the Effort Ribbon in Sunnyshore city.
In solaceon town, go to the old lady's house which is in the east, talk to her and she will give you the seal case.
migrate it
trade from diamond trade from diamond
Y
sunnyshore