User blog comment:FairyRaven/Fairy Tail Chapter 390: The Story of a Boy, Review and Commentary/@comment-7418318-20140627093953/@comment-7418318-20140629091253

Explained like this it would make some sense, but I'd still prefer if Ice Devil Slayer Magic is either purely from Deliora or a mix of Deliora and Silvers magic, rather than something Deliora completely absorbed from another source.

In the Manga we didn't see Deliora use any magic, just brute force. It was only the anime which gave it that beam attack that looked like it was fire-based.