It's Going To Cost Me Dearly Again
Thanks to his new Lumyst Breath ability, Jake could now clearly sense that what he thought was vital energy wasn't. No amount of lifeforce could cause such profound rearrangements, let alone enable him to transcend his limits with a mere 50% success rate.
From what he gathered from his Breath of Living Elements ability, it was also a form of Lumyst, but with life and some kind of holy light dual attributes. If his perception was correct, pure Lumyst was attributeless.
This, however, explained why those Light Warriors and Lifemancers all developed similar powers. If it was the main resource for their cultivation, it made a lot of sense.