well, they were closing in on them, fog rolled in because of tall dark and deadly allowing Seiko to sneak by them, Magnus flew in from above and created a ring of fire to stop them and landed to help Rachel, just think: "what would the angels do?" walk through the flames like badasses?, fire arrows threw the flames blindly like noobs?, put out the flames with their wings which would also clear the fog so they could attack?.

you know bad guy stuff =3