Sister Ines appears to charm former enemies through recitation while seals chant and crabs dance around a giant serpent.
After days of war, Samantha finds non-undead monk seals and land crabs no longer fighting. The seals sing in a chant-like style while the crabs dance around a huge coiled snake.
Sister Ines stands on the serpent's head and recites without any visible card-battle interface. Carl infers that her words may charm the snake and both armies, while Donut insists the effect is poetry rather than song.
The ritual occurs amid zombie young and countless fresh corpses just as Sheol begins ejecting demons, turning the apparent truce into a concentrated possession target.
A ritual circle of chanting seals and dancing crabs around a serpent crowned by a reciting nun.
The ritual temporarily stops the seal-crab fighting but gathers vulnerable bodies into the worst possible location for Demon Eviction.