Blacephalon

Blacephalon is blessed with a huge Special Attack stat and a very powerful signature move in Mind Blown, allowing it to do significant damage to many Pokemon in the metagame.

It also has a useful Speed stat, sitting just above Adamant Mega Salamence, allowing it to net easy KOs with Hidden Power Ice.

Although it faces competition with Chandelure due to their shared typing, Blacephalon functions as a better Z-Move and Choice Scarf user. However, its lack of Flash Fire leaves it more susceptible to Mega Blaziken.

Poor defensive stats and a Ghost typing make Blacephalon susceptible to being revenge killed, especially by Shadow Sneak users such as Mimikyu and Aegislash.

A lackluster movepool leaves Blacephalon with few offensive options outside STAB moves and Hidden Power. It notably lacks Solar Beam, which is one of the best options for offensive Fire-types.

A major restriction for Blacephalon is that Hidden Power Fighting is unobtainable, due to legendary Pokemon coming with a guaranteed 31 IVs in 3 stats. This means Blacephalon has no way of actually hurting Tyranitar, which is very common in the metagame.