What nature works best for Shiftry?

Question

I'm playing through Ruby again and just wanted to hear some opinions on whether a Modest or Timid natured Shiftry would be more effective in battle.

Keep in mind this is generation three, thanks! :)

Answer 1

Since this is ingame, a Modest Nature works better, because you will likely outspeed most trainers due to battling anyways. However, I recommend an -SDef Nature, such as Rash, because you might find that Attack stat useful for moves like Cut, and Nature Power when it turns into Earthquake.

Answer 2

I think either mild for razor leaf or brave for faint attack. Both really great moves!