Board Thread:General Discussion/@comment-13237238-20130724132657/@comment-28178541-20160410185255

Beelzebub: shikai command is give, and in shikai it slowly drains the soul of the user. In Bankai it hollowfies the user and the longer it is used, it eats away at its own soul for the price of god like power. Both just mainly strengthens attacks while draining the soul, but where as if Shikai is used to much it will kill the user, Bankai will turn them into a hollow.