You'll need to evolve Lampent with a Dusk Stone.
Litwick evolves at level 41 into Lampent.
The third evolution is Chandelure. It evolves from Lampent through a Dusk Stone. Lampent evolves from Litwick at level 41.
It's simple. Litwick evolve in the lamp Pokemon Lampent in level 41, and Lampent evolves with a dusk stone into Chandelure.
Litwick evolves into Lampent at Lv. 41, then evolves into Chandelure with a Dusk Stone.
Litwick evolves into Lampent at level 41.
You sadly can't find them in the wild. But Litwick evolves at level 41. I'm sure that wouldn't be hard if you have space in the Day Care. Then Lampent evolves into Chandelure around level 64
Litwick evolves at level 41 into Lampent and Lampent evolves into Chandelure with a dusk stone. :)
You must obtain a Litwick then Level it to level 41, you can evolve Lampent further with a dusk stone, evolving it into chandelure.
litwick evolves at 41 to lampent then fire stone chandelure
Lampent evolves from Litwick at level 41, which you can find in celestial tower on all floors except the top and bottom.
krookodile evolves at level 40 in Pokemon black and white
Klink evolves into Klang at level 38 on Pokemon Black.