The skygge were not as intelligent as cold ones and did not have magic or a protective shield. Would defeating them be like cold ones without the flaming arrow to break the shield? "Professor, could you defeat the skygge with reducto? If they are like cold ones, but without the protective shield, would you just have to skip the flaming arrow?" Penelope thought about the differences between cold ones and skygge. Without the shield, it would just be one less step, right?