Board Thread:Episode Discussion/@comment-24993958-20170114144645/@comment-4010415-20170115175638

One theory is that the sword the king of Vale used was the Relic of Destruction and is Vacuo's Relic.

The reasoning behind it is: All the other figures in the video wielded weapons that were the same color as them, but instead of wielding a green sword, Vale's king wielded a sword that's varying shades of orange, just like Vacuo's color scheme. He was somehow responsible for a high death count in both Mantle and Mistral's armies, and historians have had to chalk it up to "unusually violent weather" (was Vacuo's leader a Maiden?) and Mantle's inexperience with desert combat.

Mistral's culture (aside from that one moment in their history influenced by Mantle) is about appreciating and respecting nature, which aligns with the God of Light creating water, plants, and animals, so I wouldn't be surprised if Mistral actually has Creation.