Ars Nova

is the first Noble Phantasm of Solomon. It is the crystallization of the legend in which Solomon returned his rings to Heaven of his own will, and the only act he performed as a "human" hero. The Noble Phantasm possessed by the true Solomon and not by Goetia. A poem of farewell in which he lets go of every accomplishment, miracle, and magecraft he has.
Upon activation, he returns God's gifts back to the heavens and loses his Clairvoyance. The effect is Solomon's death. In other words, the self-destruction of the 72 Demon Gods. It is a fail-safe designed for the case in which magecraft became an "evil" for humanity in the far future. Once activated, every trace of Solomon vanishes from this world ― even on the Throne of Heroes.
Solomon's complete obliteration does not mean the erasure of Solomon, but rather that everything that is his to do is completed and finished.
All living things, when they meet their ends, have "unfinished business" that they leave behind. This is something true of everyone, regardless of how perfect a life they may have led. The path of human history is created when the people who follow pick up and bear these "remains". And a complete obliteration means to ascend from this path - to complete everything one has been tasked with, and to reach a state of existence in which there is "nothing left to do".
There is no longer a need to defeat him, or rely on him. No longer, will anyone ask of him, or need to shoulder his death, and no further help or accomplishments from him will be sought. This means a disappearance from even the Throne of Heroes. A release from the duties of one's existence - a completion of all the tasks for one to do in this universe. 
In contrast to the savior known as the only one among humanity to achieve enlightenment, the coward reached a different sort of "finality".Fate/Grand Order material IV: Solomon Profile.
All ten of Solomon's rings are required for its use. Solomon had sent his last ring to the future on a revelation from God, so Goetia was unable to know the True Name of this Noble Phantasm. As it is the actual Ring and not a copy summoned from the Throne, its effects are unable to be cancelled by Goetia's Nega-Summon Skill. 
==Variations==
===Light Band Convergence Ring===
 is the Noble Phantasm of Grand Caster. Since Goetia doesn't know the original name of this Noble Phantasm, he hypothesizes this as his Noble Phantasm. It is used to act as the activation calculations for returning to the genesis of the Earth.
==References==
vi:
Category:Noble Phantasms
Category:Anti-Unit Noble Phantasms
Category:D rank Noble Phantasms
Category:Noble Phantasms introduced in Fate/Grand Order
Category:Noble Phantasms of Solomon