The Chitauri Scepter, sometimes called Loki's Scepter, was a weapon used as the original repository of the Mind Stone, one of the six Infinity Stones. The staff was a gift from Thanos and was wielded by Loki to direct and lead the invasion of Earth. After the Battle of New York, the scepter was confiscated by S.H.I.E.L.D. for further investigation, until it was later taken to HYDRA's research base in Sokovia by sleeper agents led by Strucker. Hydra researchers and scientists, including List, used its power to power the recovered Chitauri technology and give twins Wanda and Pietro Maximoff occult superhuman abilities. After the collapse of HYDRA, the scepter was recovered by the Avengers. Later, Tony Stark borrowed it to research and experiment with its power to complete the Ultron program. The scepter was stolen and dismantled by Ultron after he destroyed its blue gem casing. The stone of thought within him came to the surface.