He envisioned the building spirit clumping toward him. He visualized the strings of power that bound it to the building. Tracing their flow from the essence of the structure, he followed the threads to the spirit’s manifestation. Because he had summoned the spirit, he knew how those mana threads were twined and knotted as they stretched to twist through the boundary of astral space. Without such a connection, the spirit would not have been able to manifest on the mundane plane. Sam felt along the strands of power, seeking to untangle them.