Board Thread:Episode Discussion/@comment-24993958-20161210130927/@comment-80.192.6.40-20161212142012

You can see, during the second of the three camera shots of him blocking it (at -1:04 left on the time bar), that it doesn't pierce the sword. Not to mention that if it could do that, then the whole "poison Ruby and bring her to Salem" plan wouldn't work because if it can punch through a fairly heavy blade, it would probably punch right through Ruby and just flat out kill her.