In your quest to complete the Sinnoh Pokédex in Brilliant Diamond and Shining Pearl, you will have to seek out Mesprit, Uxie, and Azelf: the Beings of Emotion, Knowledge, and Willpower.
Before you set off on your hunt, make sure you have first completed the Mt. Coronet section of the main story, with Dialga and Palkia.
Naturally, save your game before taking on these Legendary Pokémon.
Where to find Azelf in Brilliant Diamond and Shining Pearl
In order to find Azelf, head to the Valor Lakefront off Route 213.
Like with Mesprit, use the Hidden Move Surf to get onto the water, then find the Valor Cavern at the centre of the lake.
Azelf is found inside. Don't worry, this time the Legendary Pokémon won't immediately run away.
How to capture Azelf in Brilliant Diamond and Shining Pearl
Before you take on Azelf, pay special attention to your team composition. Azelf is a Psychic-type Pokémon, and is pretty strong.
Absol is a very useful choice, with Dark-type Pokémon being immune to Psychic moves. It can also learn False Swipe through TM54.
When it comes to Poké Balls, we recommend trying the following.
- Quick Ball at the start of the fight.
- Dark Ball, ideal for catching Pokémon found at night or in caves.
- Timer Ball if the fight drags on.
Of course, you could always just use a Master Ball... but that's no fun, is it?
Happy hunting!