This was originally the default behavior of Voidform, but it was usually a communication hindrance in organized dungeon and raid groups, so it was removed for Dragonflight. This glyph will restore this functionality.
This glyph will drop off N’Zoth the Corruptor, the last boss in Ny’alotha, the Waking City.
New Glyph: Glyph of the Shath’Yar – Shadow Priests can once again speak Shath’Yar while in Voidform. The Inscription recipe has a chance to drop from N’Zoth the Corruptor in Nya’lotha, the Waking City raid.