Because it is perfectly balanced at 328 for both speed and attack according to the database with max evs and ivs. I just caught a trapinch and it’s nature is timid.
Pleaselog inorregisterto add a comment.
Timid nature is +Speed -Attack, it means Flygon’s Speed Will grow more but it’s Attack will grow less. Here’s 2 nature’s I recommend on Flygon:
Flygon can learn Earthquake and it get STAB from it And it Can learn Dragon Dance for Speed and Attack boosts so it Depends on stats.
EDIT: Before the Release of Pokemon Sun and Moon, Flygon couldn’t learn Dragon Dance. If your playing any of the gens 1-6, then use Swords Dance with a Jolly Nature. In Gen 7, Flygon can learn Dragon Dance so use Dragon Dance.
Hope this helps :)