One of the six Infinity Stones created by the Cosmic Entities, the Mind Stone enables whoever uses it to access the minds of others to control them or unlock untapped abilities. The Mind Stone was installed in the Chitauri scepter that Thanos gives to Loki to aid in the Chitauri invasion of Earth. After the Battle of New York, the scepter was confiscated by S.H.I.E.L.D. but was later stolen by Wolfgang von Strucker's HYDRA cell who used it in their research for enhancing human subjects with superhuman abilities which left only the twins Wanda and Pietro Maximoff as the sole survivors. After the Avengers recovered the scepter, Tony Stark's research on the object resulted in the creation of Ultron who later stole the scepter in an attempt to create an organic Vibranium body to further his own evolution and inadvertently led to the birth of Vision, who currently houses the Mind Stone within his core.
Powers and Stats
Tier: Likely 7-B
Name: Chitauri Scepter, Loki's Scepter.
Origin: Marvel Cinematic Universe
Classification: Spear, former containment unit for the Mind Infinity Stone.
Powers and Abilities: Mind manipulation, can open spatial portals by using the Tesseract as a conduit, can link the consciousness of its wielder with those it controls and allow them to mentally communicate, can fire energy blasts, can grant sentience to an artificial intelligence through codes the Scepter contains, can bestow powers to non-powered individuals. Being a spear, it's also a very effective melee weapon.
Durability: Likely City level (took hits from Mjolnir).
Range: Standard melee range. Several dozen meters with energy blasts.
Weaknesses: The Scepter's mind manipulation requires physical contact with the target's heart and was useless against Stark's miniaturized Arc Reactor.