I keep thinking about 'The Luminous Dead' by Caitlin Starling. On the surface, it's about a solo caver on a terrifying mission, but it's absolutely drenched in this thick, heavy psychic resonance that reads like witchcraft under immense pressure. There's no formal coven, but the dynamic between Gyre and her handler, Em, is pure power struggle—one isolated in the dark, the other manipulating from a distance with total control of resources and information. It's a two-person coven of mutual suspicion and desperate need, where knowledge is the real spellcraft. The way Gyre has to interpret every distorted message, fighting not just the cave but Em's withholding of truth, mirrors how a young witch might grapple with a secretive elder. It’s a brilliant, claustrophobic twist on the 'coven' structure.
For a more traditional take, but with its own vicious edge, 'The Year of the Witching' by Alexis Henderson is essential. The coven here is the rigid, puritanical religious settlement of Bethel, where the power struggle is against the established, patriarchal order. The protagonist, Immanuelle, inherits power from her mother, who was part of a group of outcast witches in the forbidden Darkwood. The real coven dynamic unfolds in the tension between these two groups: the 'official' power of the Prophet and his wives, and the subversive, wild magic of the witches. Immanuelle is caught between, her very existence a challenge. The book dissects how power in a coven isn't just about raw magical strength, but about doctrine, history, and controlling the narrative of what witchcraft even means. It's less about brewing potions together and more about a bloody, ideological war for the soul of a community.