I. The Bargain Imagine a fantasy world inhabited by both humans and ancient, unspeakable evils. The ancient evils ravage hundreds of kingdoms every generation, taking countless millions of lives year after year. Eventually, the humans learn to protect themselves, lessening their casualties, driving the ancient horrors back. Some are even vanquished entirely. But it is slow, and uneven, and a single mistake can undo decades of grueling progress. Millions still perish, but fewer each year, and bit by bit humanity inches towards victory. One day, a band of human renegades attacks the kingdom, slaughtering thousands of innocents. The kingdom retaliates and hunts the renegades across the world for years, dedicating a substantial fraction of their resources to wiping the enemy out. But the leader eludes them - even years later, when the renegades have been all but completely crushed, the once-leader still taunts them from the shadows, and the citizens cry out for vengeance. One of the Ancient Horrors, on the brink of total annihilation, hears of this, and senses an opportunity. From corrupted shadow, a broken whisper hisses in the ears of the kingdom's leaders: "I offer you this exchange, mortals of the kingdom: I will give you one chance to annihilate your sworn enemy, the one whose blood you so crave - and all I ask in exchange is that your clerics lower their defenses in the human lands where I yet remain." The leaders confer among themselves. "Er, I'm not sure this is a good idea," says one. "This horror has killed millions, far more than the mere criminal we hunt, and we are so close to wiping them out entirely. Best case, we lose years of progress and hundreds of victims that we could have saved. Worst case, we'll risk a full resurgence and millions of deaths if the horror comes back into its full power. Do I even have to say this? It's obviously not worth allying ourselves with an