Allow me to present the Hungarian Minor scale aka the Gypsy Minor scale aka the Double Harmonic Minor scale aka Jimmy “the gent” Conway from Goodfellas.
Kidding on that last one. But it leads me to your next question: “Sean, why should I learn this insane scale with more aliases than a New Jersey mobster?”
Why? Because it is so much different from the scales that are already part of your practice routine. In order to progress as a guitarist, you must be always pushing the limit. Want to feel like a beginner again? Memorize this scale across your fretboard. “What? Multiple 2 fret jumps? Why????”
Because it sounds very, very, very cool.