Near Olivine city you have a miltank farm.
There are two girls with a sick miltank.
You need a lot of oran berries to heal it.
(Be carefull the oran berries are all gone before you healed the miltank because then you have to find another oran berry. It goes faster if you plant them in a berry pot.
After you healed the miltank you get a seals case from one of the girls.
In Olivine city there is a house where is little girl who gives you every day a few seals.
I hope it helped :)
xxx
go to the pc
Y
A girl in Olivine City will give some to you if you have the Seal Case, which you can get by healing the Miltank on Route 39. Heal the Miltank by giving it Oran Berries.
First, heal the farmer's Miltank with seven oran berries. The little girl will then give you the seal case. After that, you can stick seals on your ball capsules for Pokemon. *Note - Pokemon cannot be placed in the box while having a ball capsule on.
After getting the seal case from healing the sick Miltank in MooMoo Farm, three seals can be acquired each day from a girl in Olivine City.
It's in a building in goldenrod city.
You can't use poffins in this game
well you can do it with cheats or by yourself
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There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold