The Staff of Horus is a mystical Egyptian relic that was entombed in a church in Central City. It consists of the Nth metal and has been used as a weapon by Vandal Savage. It was later revealed that the Nth metal in the weapon is Thanagarian technology.
4000 years ago, the staff belonged to Vandal Savage who, at the time, was an ancient Egyptian priest known as Hath-Set. He used the staff to fend off Rip Hunter, who he would call “Gareeb”, when Rip tried to kill him in ancient Egypt. When Nth metal meteors later fell onto the Egyptian Kingdom, many objects present became imbued with the Nth metal giving the objects supernatural powers, including the staff.
Realizing he was outmatched after facing off against the Green Arrow and the Flash in Star City, Savage returned to Central City to find the Staff of Horus. He finds the staff before the Flash and Green Arrow arrive to stop him. Utilizing the staff, he was able to keep both heroes at bay. Acknowledging them as worthy opponents, Savage was about to utilize the staff's full power when he sensed Kendra awakening her past lives. Regaining his bearings, he used the staff to destroy the church, though both his foes managed to escape.
Ra's al Ghul organized a meeting with him along with Green Arrow and The Flash, in which he expressed his wish to have Carter Hall and Kendra Saunders or he would destroy both Star City and Central City. They eventually agreed to hand them over, not knowing that they plan to use the exchange as a means to defeat him.
During the exchange, Green Arrow suddenly turned on him and attacked. Savage incapacitated Green Arrow and killed Khufu with his knives. He then killed Chay-Ara who was unable to use her wings. Barry tried to use his staff against him but Savage used his magic and used the staff to kill Green Arrow and incinerate the city with everyone in it. However, Barry escaped and used time travel to go back a day and come up with a better plan.
Having the exchange again, they had learned from the alternate future failure. They handed him Khufu and Chay-Ara However, before he could kill them, Green Arrow shot their bounds. During the fight, Team Arrow managed to stall Vandal long enough for the Flash to take his staff. The Flash and Green Arrow used a glove of Nth metal to channel the power of the Staff of Horus, in turn defeating him and turning him to dust, which also caused the Staff to disappear.
- Energy projection: This staff can produce extremely powerful blue energy, which could burn and even incinerate its targets, no matter what their size is, as well as causing explosive force. Savage would strike the ground with the end of the staff to project large blasts and waves of blue energy, which grow to the size of a metropolis, burning to ashes every human in its path while leveling the city in explosive force. The weapon had an energy field that physically kept others from even touching the staff, sending those who tried flying through the air. Specialized gloves were made by Cisco Ramon to render this protection useless. While the user could touch the staff and even fire its energy, its energy aura was harmful to them and forced the user to release the staff before it could kill them. The staff would even resist the users ability to fire its energy, causing it to be unable to burn or harm what it was fired at. When Flash went back in time, he revealed the failure of the gloves, allowing Cisco to create them better, allowing Flash and Green Arrow to wield it and and fire its energy without problems. This resulted in Savage's destruction during the revised version of his battle with Flash, Green Arrow, Hawkgirl and Hawkman. Despite this, the energy could not kill Savage, only turn him to ash, as his body was eventually reconstituted because Savage can only be permanently killed while immortal by Hawkman or Hawkgirl.