Causality Tracing with Elemental Sight, Mahouka Vol 19

"It's true that the effort required to consciously sort through information makes it more accurate than abilities that rely on unconscious thought. But insofar as it involves consciously tracing threads of causality, the process requires far more mental resources than something like clairvoyance."
...
Miyuki's words were the trigger that unleashed Tatsuya's power. The resources he had dedicated solely to her returned to him. Tatsuya's sight hurtled through the sea of information as he sought the answer to his question. He traversed the tree of causality, searching through countless branches in a process of trial and error
-And then he saw the form of his enemy.