User blog comment:Sosuke Aizen008/Can Yhwach use Yamamoto's bankai(Zanka no tachi) again?/@comment-6657474-20131001211041/@comment-5657895-20131002202632

Probably it was destroyed. Yamamoto incinerated Driscoll. If the medallion survived I guess that means the Bankai could still be used, which would be a handy tool for some of the lieutenants to use.