After the event on spear piller, go to lake valor and surf in the middle you will see a cavern go in and use a move that prevents it from escaping. use false swipe and get its hp down. SAVE B4 BATTELING!then start throwing ultra balls,dusk balls, or even other balls like heal balls. then you have uxie! OR you can trade for it. that is how you catch Uxie. I hope i helped!
you have to trade from pearl
it tells you how
solacoen ruins
in a Nintendo event
you have to get it at an event or get an action replay
BY HAPPYNESS IN DAY IF IT is umbroen is in night
above jubilife city in the grass by using Pokemon Radar
im pretty sure it evolves certain types of Pokemon, you will have to find the Pokemon
Uxie is indeed a rare Pokemon appearing only once in the games it can be caught in. Uxie is part of a classification of Pokemon called Legendary Pokemon. Legendary Pokemon are the rarest Pokemon and can only be caught once per game they appear in.
Battle and defeat Cyrus in veilstone building
i think from starters is empoleon but from the others i think is gallede
i believe you go underground and dig it up.