La Black Luna

is a hunting horn granted to Astolfo by the good witch Logistilla of Avalon to drive away a large flock of Harpies. Considered the most extreme of his Noble Phantasms, it emits a magical sound similar in nature to the roar of a dragon, the cry of a giant bird, and the neighing of a divine horse, slamming targets within range with the force of an explosion of sound. Rather than emulating "The harpies that ran away in fear after hearing that sound" as told in the legend, it is a weapon of wide-scale destruction.Fate/Apocrypha - Volume 2 It is kept in a small size that can be hung from the belt on his hip, but increases in size to encircle his entire body when activated.
Those with less "HP" than the damage caused will instantly become dust that scatters away in the cardinal directions, reducing over one hundred Dragon Wing Warriors to mist in an instant. Its power isn't that great, and while it's effective against small-fry enemies, it's a bit unreliable against other Servants. However, the true fearsomeness of this Noble Phantasm is the chaos and confusion caused by the shock of its overblown sound. If someone skilled with the flute blows it, it's capable of even taking away all hearing from the targets. Their ability to fight won't necessarily be stopped just by cutting off one of their five senses or by being sent into disorder, but even so, lacking the ability to hear would disadvantage a Servant for a little at least. It wouldn't be much of a handicap for highly experienced Servants, but during clashes between first-rate Servants, there are times where the slight opening it creates can decide the battle.
Astolfo can also use La Black Luna as a Saber, and it is treated as a Skill in Fate/Grand Order gameplay.
==Development==
It was originally called in Fate/complete material IV; its original design describes it to instead strike fear into the hearts of all who hear its sound, prompting instinctive escape that does not affect Heroic Spirits with Magic Resistance but can affect normal magi.
==References==
Category:Noble Phantasms
Category:Anti-Army Noble Phantasms
Category:C rank Noble Phantasms
Category:Mystic Codes
Category:Noble Phantasms introduced in Fate/Apocrypha
Category:Noble Phantasms of Astolfo