Caster will hear someone--older, unknown--counting. "Thirteen-sixty-three, thirteen-sixty-four, thirteen-sixty-five..." The voice continues counting, growing closer and closer. Caster is frozen in place. "Thirteen-sixty-six, thirteen-sixty-seven, thirteen-sixty-eight..."

The air around Caster grows painfully cold, and it seems a door is being opened, though there isn't one there. "Thirteen-sixty-nine."

Thousands of shadowy hands reach to yank Caster through the door--but after a moment, they all vanish, and nothing is there at all.