How to Evolve Naclstack in Pokémon Scarlet and Violet

Can confirm from experience, leveling up Naclstack to level 38 works like a charm. I was grinding in the area near Cascarrafa for a couple of hours, and voila, got myself a mighty Garganacl. It's straightforward, no hidden mechanics or anything.

Evolving Naclstack into Garganacl is super easy once you know the trick! All it takes is leveling up Naclstack to level 38. No special items or conditions needed—just good old-fashioned training and battling to rack up those experience points. Before you know it, you'll have a Garganacl towering in your team!