Nightmare Sans

(It was deep night. Error quietly drew symbols on the floor and whispered a summoning spell from a book (Nightmare was the prince of shadows). He paused briefly, drawing the symbols on the floor and finishing reading the words of the summoning, but nothing happened. Error waited a bit, and then slowly, carefully touched the symbols on the floor to erase them, but as soon as Error touched them, they glowed turquoise, and all the candles abruptly went out. And suddenly, as if from the drawn circle, he emerged. Nightmare. Error stared at him for a moment, frozen.)