Reeva has a question that has been on his mind since he came to his senses. Where did the mystic force go? You could not normally see mystic force other than your own.
How would one capture such a thing, let alone drain it from other people if you don't even know what it looks like or what it feels?
In the Book, there are ways to glean into other people's mystic force. But Reeva has no way to access it. It's not that common, at least not enough to have in every church. Or every one of them would be absolutely using it to suppress any mystic user and be the sole superpower among the mystic.
Something is different here.
He just needs to find out what it is. He looks around the room while sweating buckets. He couldn't find anything noteworthy, the fire that surrounded the room and the pillar didn't have anything special in them. Other than the fire that is most likely mystic force.
