Jormag's been making a big thing about a threat on the horizon, and how ice fortifies and protects, trying to insinuate itself as the only ally that can save us from this danger. With the possibility of it being the deep sea dragon, we don't really need Jormag's ability to save us, we simply have to travel to Cantha and learn the dark rituals that allowed Shiro Tagachi to corrupt Dwayna's magic that eventually unleashed the Jade Wind turning the Jade Sea into solid jade. We would have an effective weapon or defensive measure with which to combat the dragon, or at least slow it down.