catch nincada with two spaces in your party and a spare pokeball
"ninjask doesn't evolve but if you have a empty slot of your Pokemon team when nincada evolves to ninjask a shedinja will appear in the empty slot."
Have a spare slot in your party and evolve a Nincada into a Ninjask. In the spare slot, a Shedinja will appear with 1/1 Hp and the ability Wonder Guard which negates all moves that are not Super Effective. Do noet however that if Shedinja gets poisoned or burnt or hits itself with confusion, it will faint. Weather effects such as Hail and Sandstorm still affect it. Shedinja is the only Pokemon with that ability.
Extrememly. The only Pokemon I know of that has it, is Shedinja. (Which is obtained by evolving Nincada (available in Emerald, and in Heart Gold/Soul Silver, in the National Park, AFTER you get the National Dex, and defeat Elite Four)). But to get Shedinja, you MUST have an open spot in your team, and a Pokeball in your bag. Literally a Pokeball. Maybe other balls work, haven't tried.
in soul silver
Neither. The new game is called Soul Silver, not Silver Soul.
no such thing not in soul silver
As in soul silver? Yes you can is soul silver. At the bottom of seafoam islands.
Soul silver is AWESOMENESS!! yes GET IT
you can't ice fossils in soul silver
you don't have friend codes in soul silver.
Professor Rowan isn't in Soul silver
you can't its only available in heart gold. Just like for soul silver you can only get the red orb in soul silver