Amongst the many methods that Gabriel thought of, which were fast and Swift in helping him achieve his goals, all options had one thing in common... It was that he had to prove the innocence of the Arecia Clan, which he couldn't do without revealing the Sword of Ulien.
It was only after proving that the Sword wasn't sold but was passed down the Arecia Clan generations could he clear the name of the Arecia Clan, allowing him a path to reach the throne. Unfortunately, this didn't come without risk.
The only advantage he had for now was that there were no Mages in the crowd for now, none other than the Dark Mage. As for the Dark Mage, Gabriel was sure that even that person hadn't seen this sword since he couldn't have entered the Lumen City.
The only problem here was the Holy Priestess of Summoning. Unfortunately, having no choice, this was all he could do, even though it had the potential to create some new problems in the future.