Chandelure

Chandelure has a small niche in BW OU with its ability to form solid double Ghost-type cores with Jellicent on hyper offensive teams. In contrast to Gengar, Chandelure is able to OHKO Steel-types such as Ferrothorn and Scizor while also being threatening against bulkier Pokemon such as Landorus-T, Gliscor and Seismitoad. Chandelure also has Flame Body, which makes it difficult for Excadrill to spin against it, since it must risk getting burned while attempting to break its Air Balloon. Flame Body is also useful for burning Tyranitar, which Chandelure's partners Latios and Alakazam can take advantage of.

Unfortunately, Chandelure on its own faces several problems. First off, it is Stealth Rock weak, meaning that it can take a lot of damage for attempting to spinblock. It struggles immensely against the most common playstyles in the game, sand and rain, and is ultimately unable to spinblock Starmie and Tentacruel. Its Speed tier leaves it forced out by faster threats such as Latios and Keldeo. These reasons are why Chandelure is often passed over for Jellicent which has better defensive typing, better special bulk, and a stellar ability in Water Absorb.