You will get the Eon Flute from Steven in Sootopolis City after catching or defeating Kyogre (AS) or Groudon (OR). This is an automatic event in the main story, which makes this key item unmissable.
You can use the Eon Flute to access the Soaring feature by riding on Latias (AS) or Latios (OR), which allows you to access Mirage Spots around Hoenn.
Obtaining the Eon Flute (Step-by-Step)
After obtaining the Aqua Suit or Magma Suit, you will gain access to the Cave of Origin in Sootopolis City.
You will find your version’s respective legendary Pokémon inside (Kyogre/Groudon).
Tip: Stock up on Dusk Balls if you want to catch the legendary Pokémon without using your Master Ball.
Since the battle happens inside a cave, Dusk Balls have a better catch rate (3.5x) compared to Ultra Balls (2.25x).
But once you’re inside the cave, here’s where to go to find your version’s legendary.
Step 1: Enter the Cave of Origin and head up.
Step 2: Continue heading up north until you reach the hole at the end of the hallway. Head inside.
Step 3: Head left and up to the top-left corner.
Step 4: Continue moving forward north, ignoring the path to the left.
Step 5: Continue along this hallway and once you’re in the top-left corner of this area, just wrap around to keep moving and head towards the top-right corner of the hallway.
Step 6: Keep going right until you reach the stairway on the top-right of this floor. Head down the stairs.
Step 7: From here, head to the bottom-right of the hallway and continue down the two sets of stairs ahead.
Step 8: Continue heading south down another set of stairs.
Step 9: You’ll eventually reach the bottom-right corner – from here, turn left and head down the three sets of stairs ahead.
Step 10: Continue left until the end of the hallway, then head downstairs to the next floor.
Step 11: From the staircase, turn north and continue along the path going up.
Step 12: Continue heading north and down the three sets of stairs ahead.
Step 13: Continue towards the stairway at the top-left end of the hallway and head down the stairs.
Step 14: From the bottom of this staircase, turn down south and continue down to the bottom side of the hallway.
Step 15: Continue following the path south, down a few sets of stairs.
Step 16: Walk down another set of stairs, then head down the stairway at the bottom-left corner.
Step 17: Here you will find yourself on the cave’s final floor. Head up from the stairs and then continue north until you reach Kyogre/Groudon.
Step 18: A cutscene will play, and you will be taken to another area.
Once the cutscene ends, head up and interact with the legendary Pokémon to fight them.
Step 19: Catch or defeat the legendary Pokémon to advance the story.
Step 20: The game will proceed automatically after the fight.
A long cutscene will play out, and Steven will give you the Eon Flute at this point.
How To Use the Eon Flute
Select the Eon Flute in your bag and you will call Latias/Latios to soar over Hoenn.
While soaring on their back, you will be able to find Mirage Spots around the region.
Mirage spots will be small bright starry-looking spots on the ground that you’ll see while soaring.
Mirage Spots allow you to catch legendary Pokémon. However, some Mirage Spots will only appear once you meet specific conditions.
All Mirage Spots with Legendary Pokémon
You can find the following legendary Pokémon in these Mirage Spots around Hoenn:
|Cresselia||Crescent Island||Appears at random.|
|Entei / Raikou / Suicune||Trackless Forest||Have Lugia or Ho-Oh in your party. Then visit this mirage spot during certain periods within any given hour of the day.
Raikou: up to 19 minutes past the hour.
Entei: from 20 up to 39 minutes past the hour.
Suicune: from 40 up to 59 minutes past the hour.
|Cobalion / Terrakion / Virizion||Pathless Plain||Have three Pokémon with max EVs (Effort Values) in your party. Then visit this mirage spot on certain days for each of these Pokemon.
Cobalion: appears on Sundays, Wednesdays and Fridays.
Terrakion: appears on Tuesdays and Saturdays.
Virizion: appears on Mondays and Thursdays.
|Azelf / Mesprit / Uxie||Nameless Cavern||Have three Pokémon with max Happiness in your party. Then visit this Mirage Spot during varying times for each of the lake guardians:
Mesprit: from 4 a.m. to 7:59 p.m.
Uxie: from 8 p.m. to 8:59 p.m.
Azelf: from 9 p.m. to 3:59 a.m.
|Dialga (AS) / Palkia (OR)||Dimensional Rift||Have Azelf, Mesprit and Uxie in your party.|
|Giratina||Dimensional Rift||Have Dialga and Palkia in your party.|
|Zekrom (AS) / Reshiram (OR)||Fabled Cave||Have a level 100 Pokémon in your party.|
|Kyurem||Gnarled Den||Have Reshiram and Zekrom in your party.|
|Thundurus (AS) / Tornadus (OR)||Storm Cloud||Have a Castform in your party.|
|Landorus||Storm Cloud||Have Thundurus and Tornadus in your party.|