After you defeat the 8th gym, go to the Dragon's Den, which is right behind the gym. Explore the place. Be sure a Pokemon in your party knows surf and wirlpool
you have to use the move thief on a wild horsea or seadra, which you can find at route 227 and 228 with super rod. Sometimes one of them carries a dragon scale.
you have to trade a seadra holding a dragon scale
give it a dragon scale. Sorry
The Prism Scale cannot be obtained in Pokemon Omega Ruby and Alpha Sapphire. You'll need to trade for a Pokemon holding the Prism Scale to get it.
you use it on move tutors to teach your Pokemon moves
let it hold a dragon scale and trade it then it will evolve(dragon scales are only found on seadras sometimes when you catch them that's the only way to find them)
Because it has to be on Pokemon Diamond,pearl or Plainum.
You have to battle a legendary Dragon-Pokemon in Pearl. You will have the greatest chance by facing Giritina, Diagla, Palkia, Darghina, Charizard, or Ghalstone. (Darghina, Charizard, and Ghalstone are not legendary Dragon-Pokemon, but they will supply you with a dragon scale).
defeat red gyarados.
You can go under ground
When you trade it holding a dragon scale.
you can get a dragon scale by catching a wild seadra , dratini or dragonair and hope it's holding one.
A wild horsea has a 5% of holding a dragon scale. poliwhirl has a 5% chance of holding a king's rock.
catch a horsea evolve it into seadra give it a dragon scale and trade it
you have to catch a dragon Pokemon holding a dragon scale
go underground and mine until you find one
You can evolve Seadra by giving it a Dragon Scale and then trade it. Seadra will then evolve into Kingdra.