It is also one of very few places where you can find Celebi, at the shrine they have in the forest. However, you cannot capture it. Celebi will only purify your Shadow Pokémon that you have in the first slot when you play a special flute. In Pokémon XD, Agate Village does not have as large of a role as Colosseum as the Purify Chamber is introduced early on in the game. After you manage to purify your first Shadow Pokémon, you can go and rescue Professor Krane and then the Purify Chamber is complete. Celebi does not make an appearance in Pokémon XD, but shadow Pokémon can still be purified at its shrine.