User blog comment:Kaido King of the Beasts/This Isn't Even My Final Form!-When Powerups Go Wrong/@comment-24063296-20151113061400

I still maintain Aizen's Zanpakuto was also extremely broken. He came up with this elaborate plan when he was OP to begin with. Why did so many of his enemies live if he could kill them without them even knowing what happened? Kisuke, Ichigo, Yamamoto, he could have killed any of them without any effort yet they beat him. If you can make your enemies see anything you want, even the smartest ones who may notice something is amiss (see Unohana and Gin), it becomes a non issue.