Shelgon is a dragon-type Pokmon that evolves into Salamence. If you wish to evolve your Shelgon, you will want to lift its stage to 50 after which expose it to a Wet Dance transfer.
Wet Dance is a transfer that may be realized by a wide range of Pokmon, together with Wailmer, Wailord, Castform (Wet Type), and Pelipper. After getting a Pokmon that is aware of Wet Dance, you should use it to evolve your Shelgon. To take action, merely have your Shelgon in your occasion and use Wet Dance. After a couple of turns, your Shelgon will evolve into Salamence.
