41) Azelf, Mesprit and Uxie
MEGAH96 Current Team
L90 Emboar
L86 Unfezant
L86 Golduck
L85 Ampharos
L87 Simisage
C41-01: Cave of Being
To reach the Cave of Being, Fly to Floccesy Town. Head north out of town into Route 20. Head east over the bridge, then north through the Tall Grass. Head east down the stairs, south along the past, then east over to the water there. Use Surf and head south, then west over to the waterfall. Use Waterfall to move up it. Head west, then south between the rocks. Follow the path around until you reach the entrance to the Cave of Being. Head inside. Now that you've (assumedly) beaten the Elite Four, Professor Juniper will be inside the cave. Move up behind her and she'll spin around.
Speak with Juniper, then head north past her. You'll be brought into the centre of the cave and three Legendaries, known as the Lake Guardian Trio, will appear before fleeing the cave. Guess what? They're now spread out across the Unova region! Want to go catch them? Let's go! Juniper will leave, and you should too. They're all L65, they're all pure Psychic-type.
Although you can find these three Pokémon in any order that you like, this walkthrough will do it in the following order:
Celestial Tower - Mesprit
Route 23 - Azelf
Nacrene City - Uxie
You can, of course, skip to any of the three sections and do them in the order that you want though. Anyway, onto the first of them!
C41-02: Celestial Tower
Mesprit is a little easier to track down, although may take more time. You have to return to the Celestial Tower and climb up to the very top of it, where the bell is. Up there, you'll have to step on a certain spot somewhere in the southwest corner of the top of the tower in order for Mesprit to appear.
C41-03: Route 23
Azelf can be found by returning to Route 23, entering from where the path to Victory Road is. From there, head west, past a shrub that can be cut down, until you find some boulders by some steps leading up to a little platform. Take a few steps around on the platform there and Azelf will reveal itself, allowing you to fight it!
C42-04: Nacrene City
Once you've reached Nacrene City, head to the front of the Nacrene Museum. Walk into the very centre of the paved circle in front of the museum. When you move onto the tile, you will be asked a question. Answer 'Yes' and the last of the Lake Guardians, Uxie, will appear. Take it on, the same as the others. You can, of course, try and catch it. If you decide to, save first as you only get one chance. If you fail to catch it, simply reload your game and try again.