Now I know many of you want Celebi on your team but I now have a way.
Celebi is located in Purity Forest which is also known as the Ultimate Dungeon!
It is a massive 99 Floor Dungeon where your levels reset to 1, Prohibits items,money and
friends being brought you must come alone, but which Pokemon should I use for this
dungeon? Alakazam is the way to go, thats the pokemon i used, Alakazam has a very high
defense at level 1 so you needn't worry about taking a few hits, your survival is based on
Food and finding a Pass scarf, max elixirs are your friend, see if you can find at least
four frustration TM's.
NOTE: You may NOT even get these items so it's pure luck.
WARNING: at floors 51,52,53 avoid electrodes they have a move a move which is deadly 55
set damage.
On Floor 99 if you get there Celebi instead of fighting you it just asks to join your
team. Celebi joins at level 45. Good luck and happy gaming!
P.S I have done Purity Forest. And if you are struggling with alakazam use charizard
becasue it knows heat wave and it's fire type which is super effective against most
pokemon in purity forest
P.S.S The one bad point about using alakazam is that he levels up slowly