User blog comment:TheCarrotSaysYumYum/Dragons, People and Demons.../@comment-904888-20120721035519

I feel that GS's powers have the same scent as Zeref as either:

1. Zeref just also happen to be present when the GS's powers were used, because so far Ultear (at least as far as I am aware) have made absolutely no reference to Zancrow's GS powers being similar to Zeref's. 2. GS powers are considered a 'Lost Magic', which as far as I am aware, are the magic that is closest to the 'One Magic'. Zeref's magic is possibly as close, if not closer to being the 'One Magic', which probably tripped the alarm.

GS powers, while shown to be superior in some ways to DS magic, have origins completely shrouded. We have no idea where it comes from, or who are the 'Gods' that these GS are designed to slay. For all we know, GS could have been a metaphor, as a magic that could be capable of slaying God if they existed, rather than designed to slay Gods themselves.