User blog comment:Xilinoc/Ch. 573 (Let Unohana return plz)/@comment-24716113-20140321151147

I don't think kubo hasn't thought of a catch to it yet.If that's the case it is indeed the most powerful ability.It is like placing a mini kubo into bleach-verse. I am not saying he is the strongest sternritter though.But ability-wise it could be the strongest(I don't personally think balance-luck manipulation or ywach - base ywach didn't have any ability of his own. He could give others ability and attain it when they die, which is his ability, could top that).Maybe kubo wants zaraki to just overpower him with his high raietsu or his predicted shikai or make Guremi darn stupid so that he would dig his own grave(which would be ok, if he fought some intellectual shinigami, but zaraki ?)which is pretty darn stupid.