Kakashi has Sharingan,therefore see Zaraki.
Kakashi has his hole-creator-Mangekyo Sharingan(the one he used against Deidara),therefore passing through Zaraki's trick.
Also,Kakashi copied so many moves in the Naruto world,you'd think he has quite some arsenal at his disposal.
And they would probably call for some reinforcements,Team Kakashi,Espada,maybe Aktasuki will drop there too,and possibly Orochimaru will be magicly restored for this Battle Royale.
Akatsuki vs Espada anyone?