Coven

You can induct others into your insidious coven. By performing a special ritual over the course of 8 hours, which can be done during a long rest, you can intermingle your cursed magic with a willing creature that has the Spellcasting or Pact Magic feature. This creature enters into your coven. You can have up to two creatures other than yourself in your coven at a time.

While two or more members of your coven are within 30 feet of one another, they gain the ability to cast additional spells, as shown on the Coven Spellcasting table. Additionally, members of your coven gain access to a shared pool of 5 spell slots— one of each level, from 1st to 5th level—which they can use to cast spells as normal. Expended spell slots are regained when all members of the coven finish a long rest.

Coven members use their own spellcasting ability to determine spell attack bonuses and spell save DCs. A coven member can’t cast spells of a level for which it doesn’t personally have spell slots, even if using a higher level shared spell slot. A shared spell slot can be used, for instance, to cast a lower level spell at higher levels, but it can’t be used to cast a spell normally too high-level for a spellcaster.