I don’t think shin ah did eat his leg and took soowon head because his eyes make them see fearful things, and I think now that he’s in dragon form he can influence more people into thinking that
Just to explain his powers again. They see illusions of him eating them up but in reality they are paralyzed. Because they can't feel the body part anymore + the illusion, they think they actually lost the body part
I don’t think shin ah did eat his leg and took soowon head because his eyes make them see fearful things, and I think now that he’s in dragon form he can influence more people into thinking that