Sparky

Nope, I've got Ultra Balls and nothing. Had to buy a normal pokeball, now gotta wait to hatch and evolve another nincada

guess I was mistaken then

"It is considered a special evolution of Nincada, appearing only when Nincada evolves into Ninjask starting at level20, as long as there is an extra space in the player's party and an extra Poké Ball in the player's bag. An extra Poké Ball is not necessary to obtain Shedinja in Generation III."