It was with a sense of urgency that he met with Sargatanas and Valefar, and after very little discussion it was agreed that the borders should be made less porous and that entry into Sargatanas’ wards would only be by special permission. Eligor applied himself happily; it was good to have a specific and important task at hand. And to his delight, he was invited to participate in the conjuring sessions with which Sargatanas bolstered the borders. Acting as second to his lord, Eligor watched with profound admiration as a variety of complicated guardian-glyphs, abstract and beautiful, were created, only to speed off by the hundreds to the farthest corners of Sargatanas’ wards. There, Eligor knew, they would take up position, hovering and expanding to hundreds of feet in height, fiery warning-beacons in the ashy gloom.
-God’s Demon (pages 65-66)

While you may have superior numbers on your side, Astaroth, do not be fooled. Sargatanas has managed his wards brilliantly... far better than you... and he is cunning. This is a second chance. Be clever and what is his will be yours. And mine.
-God’s Demon (page 122)