Simply speaking, Azima's ability could trace an entire object through a piece of it, or through a microelement to trace its concentrated spot.
Undoubtedly, for a Sleeping Island witch, this was a type of survival ability. For example, holding a drop of fresh water, Azima could find a creek or a lake; or judging from the kernel of a fruit from an animal's feces, she could estimate the fruit tree's location and size.
Due to the contribution her ability made to the team, quite a few Eastern Region witches gathered together under her leadership and made a tight group out of themselves.
In Roland's eyes, Source Tracing was undoubtedly the best way for discovering natural resources, whose general purposes were even broader than Sylvie's Eye of Magic.