you can't you have to trade from leaf green...
you can't
trade from leafgreen
In Pokémon LeafGreen, Misdreavus is not available in the wild, so you cannot catch it directly in the game. However, you can trade for a Misdreavus from Pokémon FireRed, where it can be found in the Pokémon Tower. Alternatively, you can use a Game Boy Advance link cable to trade with a friend who has FireRed to obtain Misdreavus.
In the lost cave in island 5
in route 213 there's a man who will give you hope it helpe
Its not on fire red it's on leaf green murkrow is on fire red version
Just keep running around and you will eventually find one. It does take a while for Pokemon to appear in the lost cave. Murkrow is RARE in the lost cave so you won't find it easily. It can only be caught in the Firered lost cave and Misdreavus can only be caught in the Leafgreen Lost cave. You cannot get Misdreavus anywhere in Firered. It is absolutely exclusive to Leafgreen.
Misdreavus is in the Forest Area. Misdreavus does not just appear there, however. You have to place certain items to attract Misdreavus.
Misdreavus is a Ghost type pokemon.
Misdreavus doesn't evolve
Misdreavus does NOT evolve by leveling up. If you want your Misdreavus to evolve you must expose it to a Dusk Stone and it becomes into a Mismagius.
all hoenn PKMN,sandshrew,sandslash,vulpix,ninetales,bellsprout,weepinbell,victreebell,slowpoke,slowbro Slowking,staryu,starmie,pinsir,azuriill,marill,azumarrill,misdreavus,sneasel,remoraid,octillery,mantine are the PKMN not in firered