Yeah, but that's not a glitch, you simply use a time flute and celebi will come in the relic stone, but I read somewhere that if you walked up into a wall and literally bumped into it with a shadow pokemon in your party, it would be instantly purified...I think I tried it once and it did work, but since I don't like cheating because it takes the fun out of the games, I didn't try a 2nd time and now I don't remember how or where the glitch was activated...*cries*