User blog comment:Httyd big fan/Twenty-Four Dragon Fight Club Match: Changewing vs. Dramillion/@comment-36107123-20180714114348/@comment-24413325-20180714153139

Dramillions can only use fire though. It's unlikely it can use ice or acid or wind etc.

The Changewing also has the ability to hypnotize other dragons, and this ability was proven to be quite powerful, as it could hypnotize the Purple Death back into sleep. It could do the same with the Dramillion.