>>57520322Shitty stat distribution.
For a Ghost-type, what you want is Speed and high Attack/Special Attack. Dragapult, Flutter Mane, Spectrier, Gengar. But a semi-bulky option could be also viable if you have awesome typing, ability or have Speed or stat boosting options. Polteageist, Ceruledge, Sinistcha, Gholdengo, Skeledirge.
This crap unfortuately has a base HP of 60. So it's gonna be a sweeper, right? Nope. Shitty base 30 Speed completely fails the base 145 Special Attack. And good luck with the 130 Special Defense if it can't take a physical hit at all with base 50 Defense.
No Nasty Plot either, Perish Body is really not that great and the elephant in the room is the 95 Attack stat. Physical Cursola never gonna be viable.