User blog comment:Mailbust/Set Analysis: Summer 2015/@comment-6246550-20150209160737

So, not too long ago, I took a look at the Skull Grinder's mask and looked at the black shadowy mystery-mask in the Summer 2015 preview, and I realized that the black mask is actually the Skull Grinder's mask and certainly not the Mask of Ultimate Power. I told Mailbust about this.