the rock part from regirock, the ice part from regice, and the steel part from registeel combine to create the music box, which i believe is used to recruit mew, but i am not sure.
yes you can you need to find the evolution cave (part of the story) on whishcash place
get to the part where you get the Reggis and then (if you have the music box) battle it and defeat it
Well there is no true mystery part in the name "Mystery Dungeon", but I guess you could say the mystery is what you will encounter in the dungeon.
lets you see darkrai in Pokemon mystery dungeon 2
You go to Mt. Mistral and he should be there, take a Mystery Part and Secret Slab just in case.
it lets you find extra legendary Pokemon in dungons
You fight Lugia at the silver trench 99f. In Pokemon mystery dungeon 2 you must bring mystery part to surronded sea 18f it will be walking around the floor.
he is in amp pains if you have a secret slab and a mystery part
helps you get alot more legendarys if you have it in your bag
Beat the part where u battle raquaza and then try to go on a rescue mission your partner will tell you that you can now select single members to go on rescue missions
concealed ruins with secret slab or mystery part
Darkrai is at Miracle Sea, but you need a Secret Slab or a Mystery Part.