Ascalon

is the holy sword of Georgios, an invincible weapon that delivers its holder from those who would intend harm and malice.
 Its "invincibility" comes not from the capacity to defeat foes, but the capacity to defend from all harm. However, by reversing its protective power, it becomes a sword that pierces through any kind of armor. Also, it can be granted the draconic attribute from his other Noble Phantasm.Fate/Grand Order material I - Georgios, p.214-221, translated by You at Beast's Lair. Upon Ascension, the form of the sword changes.
==References==
Category:Noble Phantasms
Category:Anti-Unit Noble Phantasms
Category:B rank Noble Phantasms
Category:Swords
Category:Noble Phantasms introduced in Fate/Grand Order
Category:Noble Phantasms of Georgios
Category:Dragon Slayer Noble Phantasms