This is a general-use Dex Pixia build best used against Grineer and Corrupted. Tested several setups extensively on enemies from normal gameplay, high-level missions like Sorties and Lich missions, and Endurance that are level 1000+. This setup ended up performing similarly or better against level 1-100 enemies as other popular setups, like Corrosive-Heat or Viral-Heat, while vastly outperforming them during Endurance content.
Replace the Faction Mod for the enemies that you are fighting. If you don't want to use an Expel Mod, well, suck it up; you're in RV so you're supposed to be a good enough player to take 10 seconds to swap faction mods before a 5 hour run.