The power to obtain supernatural powers through objects. Variation of Equipment Usage.
Object of Power
The user has access to an object that grants them supernatural powers, these can be magical objects of great or destructive power, or technological weaponry. If the user already possesses supernatural abilities, the objects are mostly meant for letting them access and/or enhance their powers, or grant them new abilities.
Albus Dumbledore (Harry Potter); via the Elder Wand
Harry Potter (Harry Potter); via the Elder Wand
Lyra Belaqua (His Dark Materials); via Alethiometer
Will Parry (His Dark Materials); via Subtle Knife
Shadowhunters (The Shadowhunter Chronicles); via steles and holy weapons
When Caryn Clay (Fly Girl series) has a Thunderbird feather on her, she has limited control over the weather and can fly.
Kratos (God of War); via various weapons and accessories (most notably the Blades of Chaos/Athena/Exile). It should be noted that Kratos is also granted innate, magical powers over the course of his storyline by various gods and other entities.
Malachite's Hand (Channel Awesome) was a powerful artifact that grants the user limitless magical power. Because the original gauntlet was old and unfashionable, the stone that powers it was grafted onto a Nintendo Power Glove.
Aeon (Channel Awesome - Suburban Knights) crafted a ring made from lodestone that could reflect Malachite's magic back to him.
Halo/Sydney Scoville's (Grrl Power) seven Light Orbs give each do very different things. One gives her flight, one gives her a very impressive force field, one makes a energy-tentacle… thing, one gives her telepresence, truesight and teleportation, one makes a powerful energy blast, one generates air and of the last one no one has any idea about.