Pokemon Sword and Shield Trade Codes to Get Starter Pokemon. The Pokemon community has created a set of link codes for trainers looking to trade and acquire certain Pokemon like the Generation 8 For Pokemon Sword / Shield - Trading on the Nintendo Switch, a GameFAQs message board topic titled "Karrablast/Shelmet trade code". One of the most integral aspects of playing Pokémon is trading your catches with friends so you can complete the Pokédex. There are hundreds of Pokémon in the Sword and Shield Pokédex, and several of them are exclusive to one version of the game or the other. So, to catch 'em all, you really need to trade with someone, either online or locally.