User blog comment:Xilinoc/Ch. 552 - The Fundamental Virulence/@comment-2211792-20131008172426/@comment-5398287-20131008210215

A while back, I thought of Resurrecion: Segunda Etapa as the Arrancar version of a Bankai, but I've been proven wrong. And I think it makes sense that it would be the foil to the medallion; not sure what else could be that isn't completely deus ex machina.