User blog comment:B214/Question and Answers 4/@comment-202.152.202.132-20141010200020/@comment-202.152.202.186-20141011064057

Oh yeah i just remembered that if some devils are not careful enough, someone else coud alter the formula which makes the devils will teleport to wrong place. In vol 17, Euclid was not able to teleport in order to kidnap Ross because Gondul stopped the activation process to use teleportation. So yeah i guess the teleportation circle is explained quite well ( not as good as you can get from TAMNI and Mahouka but still) which makes me think the teleportation ability is not some cheap ability.