Board Thread:Questions and Answers/@comment-6019258-20130410054916

I was watching the Zanpakuto Rebellion Arc and something struck me. I recognize that it's not canon, but, with that in mind, how were the writers able to know that Sasakibe's zanpakuto Gonriyumaru(sp?) had the ability to manipulate weather...especially lighting? I had the understanding that his zanpakuto's special powers and techniques were only divulged in the latest arc. Am I missing something? 