The Last Ritual
The Fairy Queen does not seek to conquer Aurelion. She means to make Gildglade into an altar large enough to purchase authorship over the world itself - and every hunt quietly contributes to the price.
A Fourth Place at Any Price
The Last Ritual is the point at which Gildglade stops being merely a cursed city and becomes a wager against the primordial order. The Fairy Queen remembers a version of the old triad that most human religions preserve only as broken names. To her, the divine Tablets are not holy objects to be obeyed but rules that can, under sufficient pressure, be rewritten. Gildglade is useful because it has already turned life into accounting: monster blood becomes gold, gold becomes ritual power, and ritual power is fed back into the Separation Node. What the city calls prosperity is therefore also accumulation.
The scale of the plan is what separates the Last Ritual from ordinary magic. A spell alters something inside the world. The Ritual attempts to alter the terms under which the world is allowed to exist. The source describes the Fairy Queen's formula with brutal simplicity: city as altar, gold as the blood of the world, people as instruments. The sacrifice required is not decorative symbolism. One tradition speaks of half the world as the necessary stake. Whether that number is literal or liturgical, the intended order of magnitude is clear: this is not a rite for a temple chamber but for an age.
The hunting economy makes the plan morally difficult because no single citizen has to choose the apocalypse. Hunters kill because the city needs food, walls, status and coin. The deaths of awakened Lords are strategically necessary - yet each such victory releases old power and advances the Fairy Queen's position. The Dark Lord benefits from the opposite outcome: living hordes and awakened ancient forces pull the balance toward him. The two apparent enemies therefore feed on different results of the same crisis. Gildglade is trapped between two ledgers whose totals are both catastrophic.
The final uncertainty is not whether the Fairy Queen wants to change the Tablets, but what a successful change would mean. She may seek a fourth place beside Apollo, Cybele and Dionysus; she may intend to replace one of them; she may believe that only a new formula can save a world whose old Machine cannot survive free Will. The Codex can state the plan and its cost. It cannot promise that the triad has an empty chair.