in cerulean cave
Chat with our AI personalities
obtain the odd incense and then breed mr.mime but it all on bulbapedia really XD
You can't.
The Odd Incense can be found in the Cerulean Cave along with Mewtwo himself.
Breed Mr.mime while holding an odd incense
I don't believe it does anything in Soul Silver. I have one and I looked everywhere to use it,but I didn't find anything. The only place I know to use it is in Pokemon Diamond and Pokemon Pearl versions at the Hollowed Tower,which after you talk to I think 30 people underground you get to encounter Spiritomb. But if you do find what an Odd Keystone does in Soul Silver or Heart Gold,I'd be glad to know. =]