uxie azelf mesprit and palkia
its really rare its like 1/8243 chance of finding one in the wild i believe
by either using cheats through an action replay or purchase them from the shop by the battle tower.
I suggest finding some rare candies. Or you can put your Pokemon in the day care. Hope this helps.
They're rare, so you just have to find one by chance.
snow point temple. two rare Pokemon
Not really that rare... in Pokemon Diamond you can find Sunkerns on Route 204
The only source of Thunderstones in Pokemon Pearl is by going underground and mine them out from the walls. They are very rare if you don't have the National Dex, but they become just uncommon when you get the National Dex.
shiny Pokemon are rare you can find them almost any were but they are super rare
Tropius is not rare.
Look for them in the grass
n e where
by rara do u mean rare if so your starter is rare