You make all their Pokemon faint and you should vary the Pokemon to their weakness types
beat the elite 4, ccomplete the sinnoh dex, meet prof. rowan goto pal park, talk to oak ,migrate WEEE!
Go to Sandgem Town and Proffesor Rowan will upgrade your pokedex if you beat the Elite Four.
No
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No.
No Ash is not going to battle the Sinnoh Elite 4.
fill in the sinnoh pokedex and then the national one
No but you can catch many of the Pokemon in Sinnoh after you beat the Elite 4
Get the National Pokedex by seeing every Pokemon in the Sinnoh Pokedex
jesus christ well maybe if you told me what your party is XD
No you can't, you have to beat Cynthia because you need her Millotic in your pokedex to make up the 150.
See every Pokemon in the Sinnoh Dex and beat the Elite 4 The Elite 4 provides many Pokemon to see for the Sinnoh Dex that no one else has. Good tip (Dont skip trainer battles. Although they are annoying, they carry most of the Sinnoh Dex Pokemon)
beat the elite 4 and complete the sinnoh dex
see all the Pokemon in sinnoh region go to pro birch and he will give you national dex
Spiritomb you can see by battling Cynthia after you beat the Elite Four
You can import Pokémon from emerald to Sinnoh. First you must beat the elite four and complete the Sinnoh Pokedex.
if u in sinnoh, it is on the island area after u beat elite 4 and take boat at snowpoint. if u in hoen, it is by lavaridge town