Question

Ditto is useful while breeding...eg. Adamant nature for Synchronize Munna when you want Adamant Zekrom );)

Answer 1

Nope, after. You need to catch Reshiram/Zekrom to unlock the Giant Chasm and to increase the storyline of Black/White. You can also find the legendary Kyurem in the Giant Chasm.

Comments

*crying*

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just catch two munna, its not that hard.

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well technically if you fill all your boxes and party you can get them to dragonspiral tower and catch them after you get ditto

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you find that Kyurem in BW2 right?