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An artist's rendition of the sword.
Basic Information
Name Excalibur
Other Names The Sword of Ice
Owner(s) Marethyu (As a part of his hook)
Past Owners Mars Ultor, King Arthur, Dr. John Dee, Cernunnos, Roger Bacon
Creator(s) Unknown
Date Created (Unknown) edit
Destroyed Became a part of Marethyu's hook
Powers Can kill almost anything

Corruption Creation of a Leygate

Other One of the Swords of Power

Slew the Yggdrasil

Excalibur is an immensely powerful Sword of Power that is linked to elemental ice magic. The weapon, carved out of stone, is well-polished, dull-grey, and about three feet in length. Despite the material generally being vulnerable to weathering and shattering, the weapon is effectively impossible to destroy. Dr. John Dee used Excalibur to kill Hekate and her Shadowrealm by freezing Yggdrasil, and there was a chain reaction so Nidhogg and the Disir came free. Along with the other three swords, Excalibur is/was reforged into Marethyu's Hook of Aether.


  • Corruption: Prolonged use of the swords can damage the mind of the wielder. Mars Ultor and Cernunnos were corrupted and nearly destroyed by the swords.
  • Telepathic Linking: Wounding or killing something with one of the swords of power will allow partial access to the memories and experiences of whatever the sword was connected with.
  • Killing: Like the other swords of power, Excalibur can kill almost anything. Some things (such as Coatlicue) may be immune to its power, however the sword was capable of killing Yggdrasil.
  • Creation of Ley Lines: Together the swords of power are capable of creating ley lines and ley gates. For instance, Dr. John Dee created a portal into Coatlicue's Shadowrealm using the four swords together.
  • Ice Powers: Because it is the sword of ice, Excalibur can make huge ice (like Dee have done with the second Yggdrasil).


  • Clarent is the twin of Excalibur.