It is semi rare, but it is in the Dreamyard. It was blocked with metal barrels things, but if you have beat the Elite Four, then it is out of the way. When you see shaking grass, that is possibly a Musharna. Or go downstairs from the Dreamyard and you'll see a little light at the end with some tall grass, every Friday morning, it appears just like Drifloon. Or you can evolve it from a Munna with a Moon Stone.
Hope this helps!
The dreamyard
After you save Musharna from the team Plasma grunts.
In Pokemon black you catch RESHIRAM and TORNADUS In Pokemon white you catch ZEKROM and THUNDERUS Sources : myself
you cant catch rayquaza in Pokemon black
No, it is exclusive to Pokemon White. Where you would catch Rufflet in White, you catch Vullaby in Black.
The dreamyard
Musharna is a Psychic type pokemon.
it evolves with a moon stone
Moon Stone!
You can use it evolve Munna into Musharna.
Nidorina into Nidoqueen, Nidorino into Nidoking, Clefairy into Clefable, Jigglypuff into Wigglytuff, Skitty into Delcatty and Munna into Musharna.
you have to find the musharna in the cave i think
After you save Musharna from the team Plasma grunts.
Musharna is found in the Dreamyard
Dreamworld is a place where you can catch a Musharna every Friday Night. This is also where one of the Ghetis can be found.
I'm afraid not.
Musharna is #518 in the national pokedex, and it is a Psychic type Pokemon.