>>49070222Litwick is amazing early game, especially if it has Flash Fire. Three immunities will let you cheese a ludicrous number of fights, even more if it has Minimize if you have absolutely zero shame. That said be prepared for it to become deadweight after level 25-30 or so, it's too slow and frail without evolving. Also finding a Dusk Stone can be hard sometimes. But once it evolves into Chandelure? You're gonna sweep the entire fucking game. Chandelure is strong and fast enough to take on nearly every Pokemon League by itself.
That said, Chandelure is one of my favorites so I use Litwick whenever I can. It was an absolute boon to my team in BW2, USUM, and SWSH. You really can't go wrong, just have a plan on when you'll need to evolve it and for the love of god get your hands on a shadow ball TM. It's easily caught in SWSH in particular inside the third gym and can make said gym an absolute joke. Finding a Dusk Stone in the wild area is also a complete joke.