Ulm-Manadite

"I've heard of these blades. They were once wielded by gods. Then they were handed down to kings and heroes, stopping wars, creating peaceful eras, and leading many to salvation. Each of them has a unique power, making it godlike. But when combined together, nothing in all of Earthland can match the might of these weapons. They gained the status of "Holy Relics", making them sacred and legendary. There are only a few weapons that can match them. But I heard that these blades were lost some time ago. To think these mighty weapons would fall into our possessions. We should be praising the heavens for this divine miracle. With this, our dreams to take back our kingdom can come to fruition. I would never imagine that I would see them in person, let alone wield one."

- Dante talking about the blades and the army got ahold of them.

The Four Sacred Blades (四寺院刃, Shijiinha) are a set of "Holy Relics" once belonging to the gods. Then they were passed down throughout the ages and used for various righteous deeds. Each are very powerful in their own right, they are sentient, being able to choose their own owner. Falling into the hands of the rebel army, they serve as one of the major plot device in the story, Fairy Tail: Tales of the Forgotten.