Complex sentence: In some works, the power of magic creates an effective means of invisibility by distracting anyone who might notice the character, but since the character is not truly invisible, the effect could be betrayed by mirrors or other reflective surfaces.
Split into simpler sentences: In some works, the power of magic creates an effective means of invisibility by distracting anyone who might notice the character. But since the character is not truly invisible, the effect could be betrayed by mirrors or other reflective surfaces.