Excalibur, formerly the Holy Grail, is a weapon featured on ABC's Once Upon a Time, known to be wielded by King Arthur.


When Merlin finds and drinks from the Holy Grail, he becomes immortal and gifted with magic. In an attempt to lose his immortality, Merlin reforges the Holy Grail into a sword known as Excalibur. However, Nimue doesn't want Excalibur to take away her immortality from the Grail, and breaks Excalibur into two parts, with the tip becoming the Dark One's Dagger. Merlin put Excalibur in a stone, and it could only be pulled out by the rightful ruler of Camelot. Anyone unworthy would fail in pulling the legendary sword from the stone. There is also an Unholy Grail, which can destroy magic.



  • Excalibur is based on the legendary weapon and the sword in the stone featured in Arthurian Legend.


  • S3, E02: "Lost Girl" (replica)

  • S5, E01: "The Dark Swan"
  • S5, E02: "The Price"
  • S5, E03: "Siege Perilous"
  • S5, E04: "The Broken Kingdom"
  • S5, E05: "Dreamcatcher"
  • S5, E06: "The Bear and the Bow"
  • S5, E07: "Nimue"
  • S5, E08: "Birth"
  • S5, E10: "Broken Heart"
  • S5, E11: "Swan Song"