Jirachi (quest)
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Difficulty Hard |
Compulsory? No |
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Requisites
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The Jirachi Quest is one out of many additional, not story related, Legendary Pokémon quests and is the only way to catch the Mythical Pokémon Jirachi.
Instructional walkthrough
Accomplishment of the dex requirements
In order to move forward at the Jirachi quest, you need to have all non-legendary seen data for Hoenn (Generation 3).
Jirachi and Castform's seen data
The quest starts in the Player's House with Jirachi's seen data. Once you have beaten the Hoenn Elite Four you will have the option to get Jirachi's seen data at the second floor of the Players House, located in Littleroot Town. An interaction with the Jirachi will set the seen data in your Pokédex. Depending on when you do the quest, you may already have Jirachi's seen data when you started the Hoenn region. If you don't see Jirachi on its specific spot, check out your Pokédex and see if you have the data. If yes, you can continue.
The next step is to get Castform's seen data. For that, you have to fight a nameless scientist located in the Weather Institute at Route 119A. The Scientist can only be fought once but the seen data gets saved anyway, win or lose.
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All NPCs cool down after 7 days unless noted contrariwise. | ||||||||||||||||||||||||||||||||||||
Catching Jirachi
Now you can finally aim for Jirachi and catch it. The Moon should be unlocked now, as it was previously suggested to unlock. If not unlocked, you should do so now.
Jirachi is located on the Moon. To get on the Moon, you have to travel to Mossdeep City, enter the Space Center, and talk to the old man at the second floor, who will give you the option to travel to the Moon for 
15,000.
Once you've reached the Moon, you have to pass some caves in order to reach the shiny stone on a hill. The pathway is the same one used for Deoxys, in the past. Interacting with the shiny stone will teleport you to the Wish Room with Jirachi in the middle of it. Interacting with Jirachi will result in a fight and the chance to catch it. In case you were unsuccessful in catching Jirachi, it will respawn with the same Nature, Abiliy and IVs as in their first encounter.