You don't please visit 07meowth's message board! I'm getting lonely.....:{
Beat all the Gym Leaders in Johto and the Johto Elite Four. Then look in the Pokedex for Celebi and then go to the map it tells you to. Walk around for a while and you will eventually find it. Good luck!
It doesn't matter how many times you beat the elite four, celebi is not going to just appear.
no. you obtain it by sending over a celebi that you obtained from the Phantom Champion Zoroak movie. If you have the celebi, you can transfer it over to black/white after you have beaten the elite 4, obatained the national pokedex, and unlocked the transfer machine in Hiun City
fill your pokedex
yes you have to beat the elite four before you can migrate but you must also finish the pokedex so you can get the national pokedex
The National Pokedex is given to you once the Elite Four is defeated.
When You Beat The Elite Four And Finish The Pokedex
Have to beat the elite four.
nation pokedex
Get the National Pokedex by seeing every Pokemon in the Sinnoh Pokedex
NO
No,you need to defeat the elite four first, then go to proffeser rowans lab and he will give you national pokedex.