Nominating Chandelure B-
Chandelure DID get an analysis b4 anyone tries to troll me here.
Alright, Ghost- types in general got a lot of stuff in this gen, they are un-trappable, they get past Steel- Type, they are only resisted by 1 type (Dark) and only 1 type is immune to it (Normal), furthermore it has two immunities (Fighting & Normal).
Chandelure is resistant to 7 types and weak to 4 types, but immune to 2 types. STAB Ghost in gen VI is as good as STAB Dragon in Gen V; probably the most powerful STAB.
Furthermore Chandelure has base enormous 145 base SpA and mediocre 80 speed that is enough to wallbreak. With average bulk of 60/90/90.
Chandelure is also very versatile, can run HP Ground & Fighting, can run SubSplit, can run Choice Specs, Choice Scarf, Life Orb, and WoW support.
Chandelure has amazing movepool too, Fire blast, Shadow Ball, Overheat, Energy Ball, Heat Wave, etc.
With Choice Specs it is just overkilling the whole metagame.
Flash Fire just helps your teammates getting through Fire Weakness, while Infiltrator lets you pass Subs & Screens just to make this guy an even better sweeper/wall breaker.
252+ SpA Choice Specs Chandelure Fire Blast vs. 252 HP / 4 SpD Blissey: 246-291 (34.4 - 40.7%) -- guaranteed 3HKO after Stealth Rock and Leftovers recovery
252+ SpA Choice Specs Chandelure Fire Blast vs. 252 HP / 4 SpD Eviolite Chansey: 204-241 (28.9 - 34.2%) -- 99.9% chance to 3HKO after Stealth Rock
252+ SpA Choice Specs Chandelure Fire Blast vs. 252 HP / 252+ SpD Umbreon: 193-228 (48.9 - 57.8%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
With Choice Scarf & Timid nature it is outspeeding the whole non-scarf 252+ 144 base speed metagame.
With LO it is not getting locked & can still do a lot.
SubCM or SubSplit is also amazing as chandelure forces many switches and thus making substitute easy to set up. They also add to his versatile. Not to mention Fire + Ghost combo is very very good (Gets the likes of Heatran too this gen).
It also gets Momento and Trick, two moves that support the team immensely. Trick is amazing with choice items.
It has downsides tho, being Pursuit & Sucker Punch weak, being weak to 2 priorities (Aqua Jet & Shadow Sneak) even though resisting 1 priority (Bullet Punch) and being immune to 2 (Vacuum wave & Mach Punch), it also vulnerable to all kinds of hazards (A balloon can be given to avoid Spikes & Sticky Web though).