How to get a Truant Durant in BW2?

Question

I don't have a Durant with its hidden ability, little help?

Answer 1

Dream World is the only way

In BW2, that is. In XY, the Friend Safari saves the day! :D
Hope this helps!
-It's a secret!

Comments

Done some research, Durant isn't one of the available pokemon in the Friend Safari - is there a breeding chain of some sort?

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Where and what in BW2 is Dream World?