you can use Gentle Flames which does 50 damage to an Evolution Pokemon, 30 to Basic Pokemon, and ten if the attack is aimed ...

If you’re unfamiliar with Pokemon, Arcanine is a fire-type Pokemon that was introduced to the series with the original 150. It is the evolution of Growlithe and listed as number 59 in the Pokedex.

Once they capture Hisuian Growlithe, they can feed it 50 Candy to evolve it into Hisuian Arcanine ... additional Candy will trigger the Stoutland evolution.