if you meen can you battle them agen the awnser is no.
Not really that rare... in Pokemon Diamond you can find Sunkerns on Route 204
snow point temple. two rare Pokemon
you have to defeet red
No...
You get skorupi in the safari zone in Pokemon diamond and pearl but is rare
Look for them in the grass
shiny Pokemon are rare you can find them almost any were but they are super rare
Yes, Yanma is actually extremely rare in Pokemon Pearl and Pokemon Diamond.
You can find the Pokemon Castform in the Trophy Garden in Pokemon Diamond, although it is a pretty rare chance.
Yes it will.
buy it at the rare Pokemon store
Shiny Pokemon can be anywhere, it is just very rare.