Night Sky's Edge is a Pokewalker course obtained by trading the Jirachi obtained from thePokemon Diamond, Pearl,and Platinum Event At Gamestop. It allows you to capture RARE Pokemon with special moves like:
Munchlax with SelfDestruct
Magikarp with Bounce
Horsea with Muddy Water
Bronzor with Trick Room
Duskull with Imprison
Beldum with Zen Headbutt, Iron Defense, and Iron Head.