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