User blog comment:IamJakuhoRaikoben/Chapter 503: The Last Sight Seen, Review./@comment-84.197.239.101-20160926192137/@comment-5303512-20160929013542

Magic, Magic Power, whatever you know what I meant, of course I will admit it if it is confirmed because I am better and more mature than you.

I never said that they can't be taken over, simply that while they are peak condition or don't give permission to be taken over that they can't, yet her curse power was since it is not part of her natural existance. In the volume translation Seliah said that Mira just took over the Macro ability and that Mira said she issues an order that Seliah retorts saying that no one else could issue orders, yet she did it anyway. Mira could use it on Elfman because the ability already have it's effect on Elfman, it's not like once taken over the power resets, it's effects and usage just changes partners. So in simple terms, everyone that was effected by Macro was transferred from Seliah to Mira.