Amulet of Infinite Knowledge

This intricate amulet hangs from a thick chain and is adorned with a large sapphire that shimmers with a mysterious depth. The pristine nature of the jewelry belies its true age. It has been passed down through millennia of spell casters, each bestowing a portion of their own consciousness to the "Collective" contained within in order to protect and guide future generations of magic users. 

Attunement: This amulet may only be attuned by a character with a spell slot of 5th level or higher. By doing so, a portion of your own consciousness is added into the amulet causing a schism within the wielder as your focus is split between your corporeal surroundings and the amulet. At the beginning of each day, make a WIS saving throw (DC 15); on fail your first perception roll for that day has disadvantage. 

Sentience:  Within the amulet is contained the consciousnesses of hundreds of previous magic users who once wielded it. Their personalities, stats, alignment, and motives are determined by your GM and may not always benefit the player. At times one of these personalities will emerge and communicate telepathically with the wearer to lend aid, influence, or otherwise impart knowledge. 

While attuned to this amulet, you gain the following properties

Arcane Warding: 

• +3 bonus to AC
• Resistance to Acid, Cold, Fire, Thunder, Lightning, and Necrotic damage
• Immunity to Charmed and Paralyzed

Shared Memory: This amulet acts as a Ring of Spell Storing that can hold up to 8 levels worth of spells 1 through 5. One of these spells is considered under the effect of Contingency with the conditions set as you store the spell.

Entwined Concentration: You may concentrate on one additional spell. The new concentration save is equal to 10 + half of the highest level spell being concentrated on (rounded up). If you fail the save, both spells are broken and you immediately take one level of exhaustion. While maintaining the focus on multiple spells, the effects of Deep Tradition are suppressed.

Deep Tradition: Choose a spell school appropriate to your character (For example: A wizard's tradition). When casting a spell of your chosen school, you may do so at one level higher without changing the spell slot used to cast it. (See "Casting this spell at higher levels")

Enhanced Spell Mastery: A Wizard attuned to this amulet gains an additional 1st and 2nd level spell to their [feature]Spell Mastery[/feature] feature.

Notes: Bonus: Armor Class, Resistance: Acid, Resistance: Cold, Resistance: Fire, Resistance: Lightning, Resistance: Necrotic, Resistance: Thunder, Immunity: Charmed, Immunity: Paralyzed, caster, Utility, Warding