One week later:
POV Vesuvius:
The pages of the ancient book bound in the old, dried skin turned themselves. The purple-glowing letters on its yellowed paper shifted and rearranged. The aura of death, threatening to decay the surroundings, leaked from the radiant ink.
The pair of shining eyes darted from one corner to the other while the dragon tried to comprehend the text's shifting patterns. Each word, each shift, each pattern, and each page containing not just instructions but also emotions, sensations, and feelings they evoked within his mind.
Most of them looked like gibberish, causing headaches to the dragon just by looking at them.
The time ticked slowly, the previously fast river turning into slowly crawling mud. It was like hypnosis, each shift directing his mind into a subconscious state. The changing patterns slowly lead his mind away from the physical world.
Then his eyes opened as he felt it. He felt his two souls, the one burning hot and the second freezing cold.