- Not to be confused with the Dragon Blade.
|“Uh, that's some blade you have there. Crazy how it repelled those powers.”|
“Oh, yeah? Carved from Dragonbone. From a piece of the Firstbourne.”
|— Rocky Dangerbuff and Chew Toy, "Radio Free Ninjago"|
At some point in time, the Dragonbone Blade was created alongside the rest of the Dragon Armor. When the Dragon Hunters confronted the Firstbourne, Heavy Metal managed to steal the blade and later used it for hunting Dragons.
When Jay and Kai were fighting for water, Faith used the Dragonbone Blade to cut a small cactus for water.
While the Hunters chase Faith and the Ninja, Iron Baron steals the Dragonbone Blade.
Iron Baron used the Blade to make Wu keep walking to the Firstbourne's Nest. Later, when the Firstbourne trapped Iron Baron in molten rock, Wu took possession of the blade.
When the Marooned Ninja returned from the First Realm. Wu and his nephew, Lloyd, go to confront Garmadon as Wu held the Dragonbone Blade, which Garmadon recognized as being their father's sword, but he mocked his brother for believing just because he had the sword, he could match Garmadon's full powers, which Garmadon boasted as being above even their father's. During the fight, Wu lost the sword and was knocked off Borg Tower by Garmadon, who soon wields it against Lloyd before he is able to disarm him and used it himself. Lloyd was amazed at how the sword attracted his father's power before a repeat of clashing from Garmadon ended up making Lloyd lose the sword as it soon fell off the tower.
- Attraction & Repulsion - The user can use various means to either pull objects towards them or push them away. In this case, the Dragonbone Blade can be utilized to draw elemental powers away from their intended target, as demonstrated by Heavy Metal.
- Elemental Absorbing - after it attracts the element into it the blade can absorb the power
- Breaking Vengestone Chains - According to the designer videos and the commercial for the Hunted sets, The Dragonbone Blade can free the Dragons by breaking the Vengestone Chains, although it didn't happen in the show.
- 87. "Radio Free Ninjago"
- 90. "Two Lies, One Truth"
- 91. "The Weakest Link"
- 92. "Saving Faith"
- 93. "Lessons for a Master"
- 94. "Green Destiny"