HAndOS
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Nathaniel closed the window with a board and began. He arranged the candles and lit the incense. Then he drew three pentagrams. In the first was himself, in the second, a piece of glass, and in the third, the newly appeared imp. Nathaniel said in a language known only to mages: submission, confinement, and binding. And the imp immediately found itself in the shard of glass, confined there for eternity.