The clickbait aspect is the teaser "had a deadly goal" which is designed to make you wonder "what was the deadly goal?" It's the same form as "You won't believ

The clickbait aspect is the teaser "had a deadly goal" which is designed to make you wonder "what was the deadly goal?" It's the same form as "You won't believe number 9!" in a clickbait top 20 list. It is phrased in a way to make you wonder "what is item 9?" There is a combination of emotional content and purposeful, unnecessary ambiguity.