Amulet of the Linked Soul

This polished amulet is set with a small, shifting gemstone that faintly mirrors the form of your familiar. While you are attuned to it and have a familiar, you gain the following benefits:

The range of your telepathic connection with your familiar increases to 1 mile.

When you cast a spell that targets only yourself, you can choose for the spell to also affect your familiar if it is within 60 feet of you.

Once per long rest, when your familiar would drop to 0 hit points, you can use your reaction to instead reduce it to 1 hit point and teleport it to an unoccupied space within 5 feet of you.

Notes: (requires attunement by a spellcaster)