Beneath Ceaseless Skies | Merciful Even to Scorpions by Kay Chronister
Maribel had not spoken of that day in the thirty-eight years since it had happened. But she thought the pig-boy deserved to know what would happen. “When they pronounce him guilty,” she said, “Father Domingo will come and get you. He will want you to pray at the shrine of Saint Rafael for the power of transmogrification. He will tell you the words to use. Then he will take you to the village square. Everyone will be gathered and the man tied up there. You’ll make the man swallow a cup of something and command his devil to take the form of a javelina.”
Source: beneath-ceaseless-skies.com