User blog comment:Water Dragon Slayer/DREAM BATTLE CHRONICLES: FIRST MATCH!/@comment-15267891-20130718235553

Directly using Second Origin as a new technique, Lucy can have new Celestial Spirits. Second Origin is dormant power and at the same time the person can use magic for a longer time. When Erza used her's, she brought out an armor which according to Levy no one was able to use for 10 years.

Here'a a wild imagination: Desperate Lucy, in a life-threatening situation summons her dormant power. Then suddenly, a huge and powerful Celestial Spirit comes out - any of these: Draco, Phoenix, Hydra etc. Someone made a theory about platinum keys before and i'm gonna use that.

Another: a powerful Urano Metria can beat Minerva.