Archmage Amulet of the Allfather

This amulet is a beautiful trinket, in the shape of a golden feather afixed white gold sun, hanging from a sparkling silvery chain. Heavy in its looks, but light to the touch. The amulet contains powers, drawn from the allfathers powerful Arch Angels themselves.

The wearer of this amulet is given the following benefits:

• Once per long rest, the wearer can, as a bonus action, summon "The spirit of an Arch Angel", a spell that summons an astral projection of an Arch Angel that fights alongside the caster. 
• +2 to Wisdom
• Advantage on Wisdom saves, regarding magic.
• Can store 2 Spells of level 3 or lower into the amulet, free to cast as their normal actions, without using spell slots. Must take a short rest to change or infuse the spells into it.

The Arch Angel spirit has the following stats, and fights on its own initiative, controlled by the caster.

Illumination. The Celestial sheds bright light in a 300-foot radius and dim light in an additional 900 feet.
Greatsword. Melee Weapon Attack: +15 to hit, reach 8 ft., one target. Hit: 22 (4d6 + 8) slashing damage plus 27 (6d8) radiant damage.

Notes: Bonus: Wisdom Score, Advantage: Wisdom Saving Throws, Wizard