The Howling Aces buff (secret state)(as chalice S rank) 

mod use 1.3.4version on steam, for now.
download:1drv.ms/u/s!Au...
this mod version is v0.3.7(till moonshine mob)
Sorry for being so late with my new update, I've been so busy with my graduate design, so without my girlfriend's help, I can't finish the boss tasks.
In my opinion, it is the most difficult boss to beat, so good luck!
some unseen changes: the turret dog won't take damage before dying, and will decrease the attack frequency when each turret dog gets black smoke/dead.