Dragon Breath Enchantment

"A weapon forged with my assistance will have great power."

- Kilgharrah to Merlin

Dragon Breath Enchantments are enchantments that allow a weapon to kill anything, including the undead and creatures otherwise immortal. This power can only be granted by burnishing the weapon in a dragon's breath.

History
According to The Chronicles of Beltain, the knight Sir Marhaus owned a sword begotten in a dragon's breath (Excalibur).

When Arthur challenged the wraith of Tristan de Bois to a duel, Merlin asked Kilgharrah to burnish the sword Excalibur so it would have the power to kill the dead. Kilgharrah did so, but on the condition that Arthur alone would wield the sword. After Uther used Excalibur to defeat the wraith instead, Merlin cast the sword into the Lake of Avalon, where no mortal man would ever find it (Excalibur).

After the Fall of Camelot, Merlin retrieved Excalibur from the lake and used it to battle Morgana's immortal army. When its task was complete, Merlin used his magic to hide the sword in a stone in the Forest of Ascetir, where it remained until it was claimed by Arthur following the Second Fall of Camelot (The Coming of Arthur, The Sword in the Stone).

Merlin threatened the Dochraid when she refused to help him free Gwen from the Teine Diaga. He slashed her arm and later stabbed her when she tried to attack him, leaving her badly injured (With All My Heart).

Morgana had Aithusa burnish the sword that Mordred used against Arthur during the Battle of Camlann. When Mordred stabbed him, a fragment of the blade broke off and remained in Arthur's body. It eventually worked its way to his heart, resulting in his death.

While Arthur was still living, Merlin tried to save him by taking him to the Lake of Avalon. They were ambushed by Morgana along the way and Merlin confronted her with Excalibur. Confident that no mortal blade could kill her, Morgana made no move to defend herself and was consequently killed when Merlin ran her through (The Diamond of the Day).

Appearances

 * Series 1
 * Excalibur


 * Series 3
 * The Coming of Arthur: Part Two


 * Series 5
 * With All My Heart
 * The Diamond of the Day: Part One
 * The Diamond of the Day: Part Two

Trivia

 * According to Kilgharrah, swords blessed by this enchantment cannot be destroyed (Excalibur).
 * According to Gaius, the Sidhe are the only magical creatures capable of stopping this enchantment's fatal power (The Diamond of the Day).