The plex was just so fragging big, and the troll had no idea where to search as he roamed astrally through the sprawl. Sure, he knew what he was looking for, but the haystack was so huge and the needle would be well-hidden. To find the elf, Tom’s astral body would actually have to enter the very room where Serrin was. He couldn’t just try to magically assense his location through whatever walls were hiding his friend from view. With a million buildings in the city, that would take forever.