Shedinja doesn't evolve. Nincada evolves at level 20 into Ninjask. If you have a free space in your team (i.e. are only carrying 5 Pokemon with you) and a spare pokeball in your bag, when your nincada reaches level 20 and evolves into ninjask, you will also find a shedinja in your team. But it doesn't evolve into anything.
Shedinja does NOT evolve!!
it evolves into ninjask/shedninja. (you can only get shedninja if you leave a slot open in your party when you have nincada.)
It's simple. you take nincada and put it in your party, but leave one slot open. It'll evolve at level 20 and you'll get a shedninja and a ninjask.
nincada evolves at level 20 (i think) if you have an empty pokeball when you evolve nincada you will get a shedninja. nincada evolves into ninjask
You don't. You must evolve nincada in ninjask, but when you evolve it, have an empty slot in your party. After nincada evolves, check your party, 100% chance you'll have a shedinja
Evolve ninjask with one open spot in your party and at least one empty pokeball.
No Ninjask cannot evolve but Nincada evolves into Ninjask at level 20 but if you have a poke ball and a empty slot the empty slot will be a shedninja
just evolve nincada and make sure you have a spare poke ball and an extra slot
I believe you evolve nincada with an open spot in your party and you will end up with ninjask and shidinja in your party.
get your nincada to at least level 20 you also have to have a free space in your team
Level up your Nincada to lvl 20, make a place in your team and you'll have Ninjask AND Shedinja
it evolves at level 20 into a ninjask, but if you have an extra space in your inventory and an extra poke-ball, you also get a shedninja added in that empty slot.