Yes, I know the Pokemon is called Chandelure, my stupid phone auto-"corrected" it. I don't really care much about an immunity when it's already 1/2 resistance, and the substitute isn't much of an obstacle. It generally goes away after one decent attack, so not too much of a loss. Sunny Day is not a bad move. It causes Solarbeam to be used in one turn, and increases the power of Chandelure's Move Flamethrower, while reducing the damage that Chandelure takes from Water type attacks. Solarbeam has a greater base power than Energy Ball by 30 (40 gens 4-5), so along with the other effects I said, it's definitely worth the ONE TURN it takes to activate. Who ever said that I made this Moveset for Sw/Sh? I normally play White 2, so I make them for White 2. Plus, for all I care, you can just migrate a Chandelure with Hidden Power to Sw/Sh.
If you really want to max out HP, and one Defense, go for it. I don't really care. Honestly, I missed that, but who cares if it has a minus attack nature with a Physical move. It also gains a boost if the Opponent is burned. Ever heard of a typo? So what. Doesn't mean it's banned in stuff like the battle subway or white tree hollow. I realized that already, so sorry that I'm human and make mistakes. Again, doesn't mean it's banned from the battle subway or the white tree hollow.
Sorry if I come across rude, I'm just sick of you being so hypercritical.