Is it possible to get to Challenger if I play only Xerath and Lux in mid lane and Nidalee jungle?
Substitutes for mid would be Ahri in case those other 2 are taken, and for jungle I'd choose Amumu if Nidalee would be taken, but otherwise I would only play those three champions, the priority would be in the order I named them.
I am asking this because I wanna know if skill alone will suffice, or if I must learn to play other champions depending on the team composition. Basically, is getting good with the champions I named in the title enough to get Challenger or are they too niche to play in every single game and I would need to pick something else depending on the team compositions? There are some champions that kick ass no matter what if you are good with them (Yasuo, Riven, Vayne, Master Yi) and I believe you can play them 99% of the time and you can win if you are good. I watched Challenger Matches in Korea servers and I never saw Xerath or Lux, and rarely Nidalee so maybe these champions should only be picked if the team comp is right (Pick Xerath if you have a splitpusher cuz you can hold the lane just fine, pick Nidalee if your team has some reliable CC to help you land the spears and don't pick her if they have too much lockdown). What I see most of the time in those games are champions like Gragas, Zac, Tristana, Caitlyn, Orianna, Taliyah, Camille etc.. so maybe I need to play meta champions to get Challenger.
Oh and I don't want to simply have a lucky streak, reach Challenger for a day and then back to diamond. Also, I asked because I was Diamond since Season 4 on my old main and I never managed to get higher than Diamond 2 with them and I never bothered to play other champions, so maybe I should have changed my mains, learned meta champs or those hard to master champions like Yasuo and Riven and only played Xerath, Lux and Nidalee when the time was right. Or maybe I wasn't good enough with those champions after so much time with them.