alpha arceus

This is almost the same as catching Darkrai.First go in any pokemon mart at any time.if you have great luck like I did in my pearl the hotel manager dude will be standing there again.Read darkrai darkness first.it'll make more sense.ok so talk to him once again and he might give you a thing called the Azure Flute.after you get the Azure Flute then climb Mt.Coronet until you reach the top of it.Then after 2 steps forward in what was spear pillar it says it doesn't say this part... pretend your name was FRED it would say Fred's azure flute is making a sound blow into it? hit yes and DONT SAVE AFTER THIS IT WILL BREAK YOUR GAME EVEN BEFORE THIS.what i'm trying to say is don't save in the hall of origin ok? good.now a stairway will appear like magic after you blow the flute.Go up the stairway and remember dont save.after you go up the stairs all the way take 4 or 5 steps forward.Now you'll hear Arceus's cry.he'll drag himself up to you and you are in a battle with Arceus.I would definitely use a master ball if you still had it.He is almost impossible to catch.Although my friend caught him in a Dusk ball.one more thing you can only catch him once so be careful!!! and you have to catch both palkia and dialga before catching arceus