Yennefer and these Dragon-Men have not seen the Undead before, so they couldn't tell the differences—they only instinctively felt they were eerie. However, Ange and the others came from the Undead Empire and immediately noticed the oddities.
These Tree People all lacked life—they were dead trees, yet they could still move, becoming the Undead among Tree People.
The disturbed Deceitful Tree Men started moving; they turned their bodies silently and rushed toward Ange and others with great strides, twisting their forms.
Luther immediately clasped his hands together, forming a Qi Sword, and pointed forward, his entire form becoming virtualized and pushed the Qi Sword shooting towards the foremost Deceitful Tree Man.
Luther's martial technique improved daily. As he became more familiar with his form, he quickly devised a series of moves suitable for this form—truly, he was the former prodigy Sword Saint.