Golden Weapons

The four Golden Weapons are the most powerful weapons in Ninjago, consisting of the Sword of Fire, Nunchucks of Lightning, Shurikens of Ice, and Scythe of Quakes. They were created by the First Spinjitzu Master.

History
The gold for the golden weapons was obtained from the Golden Peaks. But, they were forged in the temple of light. The First Spinjitzu Master first used them to create Ninjago. After he passed away, his sons, Wu and Garmadon were to protect them, but Garmadon tried to take them for his own selfish ends after he was bitten and turned to evil by The Great Devourer. Sensei Wu defeated him and banished him to the Underworld, after which he hid all four weapons, and placed a Guardian over each one.

After the Weapons were hidden, Sensei Wu created a map so that if he died or was captured, the Weapons could be obtained if they were needed. This map was given to Kai and Nya's father. Later, the Four Weapons were gathered by Sensei Wu and his four ninja proteges, Kai, Cole, Jay, and Zane. However, they were ambushed by Samukai and his Skulkin army, and the Weapons traveled to the Underworld.

There, Sensei Wu and Samukai fought over them, and Samukai gained the upper hand. After that, he attempted to use the Golden Weapons to defeat Lord Garmadon and retake the Underworld, but the Weapons' power was too great for him to handle, and as a result he was destroyed and created The Portal. Garmadon used this opportunity to escape to a secret dimension of his own, and become strong enough to wield all Four Weapons. After Garmadon left through the portal, the Four Ninja took up the weapons, vowing to protect Ninjago and be ready for Garmadon's return.

Afterwards, Kruncha and Nuckal got the idea to steal the Four Weapons from the Ninja while they were sleeping and temporarily became the New Masters of Spinjitzu through them. After a whirlwind adventure on the training course at the Monastery of Spinjitzu, the Skulkin Generals decided that it wasn't a great idea to begin with and returned the Weapons.

Trivia

 * The four Golden Weapons have small stones the color of their element. The Shurikens of Ice have light-blue, The Sword of Fire has red, The Nunchucks of Lightning have dark blue, and The Scythe of Quakes has brown.
 * If all four Golden Weapons are laid in front of the one destined to be the Green Ninja, they will react with green lightning.
 * They were all created at the Golden Peaks.