When the Lava Dragon turned into his humanoid form, the overwhelming energy that made it hard to stand in the cave dissipated to the point that it was bearable for everyone without coating our bodies in a thick layer of MP.
His energy was still present, but it wasn't as powerful as when we entered the cave.
The dragon held his red, scaly egg in his hands and approached us, explaining that he had been protecting it from the devils that roamed the northern continent.
We already knew those details from Garon, so I asked if they had tried attacking him recently. However, the dragon said that once he went into full protection mode and covered the mountain with his energy, the devils' advances stopped.
The dragon knew that the continent was going through a difficult time, with most of their citizens being mind-controlled by Baelzor.