1. Reaching the Sky Pillar:
* You need to have beaten the game's main story and obtained the Mega Stone Key from the Pokémon League.
* Go to the Sootopolis City and take the path north. You'll see a path that leads to the Sky Pillar.
* Enter the Sky Pillar.
2. Navigating the Sky Pillar:
* The Sky Pillar is a vertical tower with multiple floors.
* The first floor is the entrance.
* You'll need to use Fly or Telepathy on a Pokémon to reach the second floor. There is no way to climb stairs.
* The second floor has two doors. The right door leads to the third floor.
3. Finding Rayquaza:
* Once you're on the third floor, you'll find Rayquaza at the end of the pathway.
* You will need to have caught all 150 Pokémon in the Hoenn Pokédex to trigger Rayquaza's appearance.
Important Notes:
* Rayquaza is a very powerful Pokémon, so be prepared for a tough fight.
* If you're having trouble reaching the third floor, make sure you're using the right door on the second floor.
* If you're struggling with the fight, try using multiple Pokémon, and make sure you're using effective attacks and strategies.
I hope this helps! Let me know if you have any other questions.