One month later:
POV Vesuvius:
The small pieces of stone drifted and circled around the dragon, swarming around him like a flock of birds. They all orbited around the towering, black form of the dragon as if he was a star in the centre of a star system.
Right before his eyes, two of them collided, their collisions sending ripples and stone fragments through time. They connected and formed a bigger boulder.
Vesuvius felt like watching a creation of a star system, just on a much smaller scale. A trickle of the earth-elemental energy nourished the dragon.
'I don't need the system to learn time magic.' The longer the dragon observed the time and the stone floating around him, the more he was sure the time acted similarly to space.