Any tips for shiny hunting in Pokemon White/Black?

Ive been very lucky in my Black & white game in them ive capture: Riolu, Cubchoo, Tranquill, and Emolga.

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Try having a pokemon with Illuminate in your party to increase your chances of encountering Pokemon

If you have access to wifi in your house, get a ditto with gts that comes from another language game (ex.Japanese ditto). Then breed it as normal with another pokemon, the chance of getting a shiny gets raised from 1/8192 to 1/1366 :D. It's called the Masuda method and ive gotten plenty of shinies that way.

Trial and error