Henry toyed with a fist-sized blue gem that glowed faintly despite no sunlight reaching it, tossing it up and down as a luminescent white light wriggled inside, resembling a worm.
He had found this gem within the head of the Ice Giant, and the moment he touched it, he felt a surge of unfamiliar energy being drawn into his body. Unlike Mana, this energy moved too quickly for him to grasp as it traveled through his Mana Circuits, disappearing into the dragon tattoo on his chest where Caelum, the First Sword, rested.
"It's dimming again" - Henry said, watching as the light within the gem was fading away, slowly turning into a pale color, a death gray. The light worm's movements were becoming slower and slower each time it touched his hands.