The Deified Pokémon

Description: You have obtained the Azure Flute, which is said to be the key to meeting Arceus, the Pokémon spoken of in ancient myths. What will happen when you play it?

After defeating Volo, the Celestica Flute turns into the Azure Flute and you can now play it to summon Arceus, however when you use it, you are told to seek out all Pokémon

The Deified Pokémon

Facing Arceus

After you have caught all 237 Pokémon in the region (except Phione, Manaphy, Darkrai and Shaymin), you will be able to face Arceus. You will get given Mysterious Balm, converted from your Arc Phone, and you will need to throw it at Arceus to get to the battle. There are several phases of attack. First is sending a batch of homing minor energy bolts at you which need rapid dodging. Another is a blue shockwave followed by a meteor strike. Finally there's big waves of energy that envelop most of the arena. You can also throw a ball to battle Arceus to have an opening for the balm. After you have defeated it, you will be given Arceus and its Legend Plate.

Arceus
Level 75
OT:Yours
ID:Yours
??? Nature.
Date of Receiving
Snowpoint Temple. Level Met: 70
Calm Mind
Extrasensory
Judgment
Hyper Beam

Like the Noble Pokémon, Arceus can be rematched for a tougher challenge

Facing Arceus