Just go to my house and get in my room XD
Just kidding! You just have to get lucky and find one or go to that house where you catch Suicune ( It`s the route above Cerulean city)
Chat with our AI personalities
moon stone
There are a lot of Pokemon that evolve with moon stone: Nidorina -> Nidoqueen Nidorino -> Nidoking Clefairy -> Clefable Jigglypuff -> Wigglytuff Skitty -> Delcatty
an evelution stone
No
Give it a moon stone. (level doesn't matter.) I think you can find one at mount moon in the kanto region.