How can I use a setup move like Nasty Plot if a frail Pokemon doesn't hold the Focus Sash?

So, this Smogon set has a Zoroark that utilizes Nasty Plot:

Zoroark @ Life OrbAbility: IllusionEVs: 252 SpA / 4 SpD / 252 SpeTimid Nature- Nasty Plot- Dark Pulse- Flamethrower- Focus Blast

Since Zoroark is frail, how can you use Nasty Plot successfully without using the Focus Sash?How are you able to use other stat raising moves on a frail Pokemon that doesn’t hold the Focus Sash?

Pleaselog inorregisterto add a comment.

Just in general, the best time to use any non damaging moves, whether that’s hazards or setup moves, is when your Pokemon is facing off against someone that it forces out, or to be more accurate, should force out. The key word here is ‘should’ as there really are players who have the balls not to recall their Pokemon even against certain death and that kind of play style can be rewarding sometimes

An example of this is when a Landorus is facing off against Heatran. It incredibly obvious that Heatran should retreat which means Lando has a free turn to do whatever it wants but sometimes, the Heatran trainer might be ballsy enough to take the chance and try to burn with lava plume or toxic Landorus, which is very rewarding but also extremely risky

That being said, there is no real way to secure that chance. Since this game is all about prediction, you can never be too certain about anything as with just about any kind of prediction, whether it’s about in a Pokemon battle or something, it could turn out to be wrong and when it does, it doesn’t end well