Azure Flute

The Azure Flute (Japanese: てんかいのふえ Heaven Flute) is an event item received through a Nintendo event needed to access the Hall of Origin, where Arceus can be encountered in Pokémon Diamond and Pearl.

When the top of Mt. Coronet is reached, the player may choose to use the Azure Flute; this will cause a staircase to appear that the player can use to reach the Hall of Origin. It is said to play a tune that is beyond this world.

So far, this item has never been distributed officially anywhere in the world, even in Japan, and as such is only available by use of cheating or hacking.