I dispute the validity of this one, Tewi has enough luck that she should be virtually invulnerable! In FS/N terms she should be immune to a C- ability like the mystic eyes just as how Saber's luck prevented Gae Bolg from being a mortal wound!
Here.Mystic EyesWhere in the world am I?Excuse meeeee! Please catch that stupid rabbiiiiit!WAAAAAAAAAAAAH!!!