How do you get shimmer hill Pokemon Mystery Dungeon?

You can't actually get "Shimmer Hill" in Pokémon Mystery Dungeon games. There's no location or area called that in any of the games.

It's possible you're thinking of:

* Shimmering Sands: This is a location in Pokémon Mystery Dungeon: Super Mystery Dungeon and Pokémon Mystery Dungeon: Rescue Team DX, known for its desert-like environment and challenges.

* A different location: There are many different locations in Pokémon Mystery Dungeon games, and you might be mixing up the name.

If you could provide more context, like which game you're playing or a specific detail about the location, I might be able to help you find the specific place you're thinking of.