While battling Wattson, Amber swapped Pelipper for Nincada, who continued taking damage from Manectric. Nincada resisted Manectric's Roar, since Amber had no other Pokémon available to him at that moment. Still, Nincada evolved into a Ninjask, and, unknown to Wattson, into a Shedinja as well.
After Amber's Ninjask fainted, Amber's Shedinja attacked Wattson and Manectric, knocking them into the ocean to drown.
None of Shedinja's moves are known.