Twin Amulets of Arcane Affinity
Wondrous item, very rare (requires attunement by a spellcaster)
These matching amulets resonate with a harmonious frequency when in each other’s proximity. In order to attune to an amulet, you must do so simultaneously with another attuner. While you are both attuned, when the other amulet is within 30 feet of you, you gain a +1 bonus to spell attack rolls and to the saving throw DCs of your spells. Additionally, when you cast a spell that affects multiple creatures, you can choose to exclude the other amulet wearer from the effect. As an action, you can touch the other amulet wearer and expend 1 spell slot of 3rd level or lower. The other wearer regains an expended spell slot of an equivalent level. If the other amulet wearer is within 30 feet of you and is reduced to 0 hit points but not killed outright, you can use your reaction to expend 1 spell slot of 5th or higher to drop them to 1 hit point instead of 0. You can use this reaction once per long rest.
“The twin mages Jiménez and Jerónimo were always seen together. Twas rumored they had never been in separate rooms, for fear of what might happen if one could not see the other. As you can imagine, their eccentric behavior caused much stir in the arcane community. Eventually, word of the inseparable pair reached the king, and he summoned them to court. To sate his morbid curiosity, the king had the brothers forcibly separated into two lead-lined chambers for 1 whole minute. They solemnly shared one last glance before the rooms were sealed. At first, their screams caused uproarious laughter in the court. But as the time pressed on, and their screams fell silent, so too did the courtiers. When the doors were opened, both brothers lay dead. No mortal wounds were discernible. The only items of note on their bodies were these matching amulets of arcane affinity, a great unsolved mystery. And now their priceless jewelry can be yours! I’ll accept bids starting at 500 gold! Do I hear 500 gold for the dead twins’ necklaces!”