>>52423497People tend to run Salazzle in two ways: sweep or stall. Timid or Modest nature either way.
You can probably guess her "sweep" moveset by looking at her movepool and stats. For "stall", you'd go with Protect, Disable, Substitute, and Toxic. Corrosion means she can poke a hole in teams that have a bulky Steel type.
In the USUM days, one fun thing I'd do is send out a Zoroark disguised as her, to bait Psychic types. Salazzle is weak to Psychic but Zoroark is immune, their stats are pretty close, and they have move overlap. Had a guy rage quit when he mega evolved Alakazam and tried to OHKO her, move failed, got hit with Night Daze. 