Nature spirit
"Don't you find it odd about the behavior of the volcano?" The Reaper responded to him with a question instead of directly explaining about the lava spirit.
"hmm?" Azzy didn't get what he is talking about. "What behavior?"
The Reaper then gave him a clue, "like erupting very frequently to make sure the lava lake never hardens up."
"So, are you telling me that this volcano was actually some platinum-grade beast in disguise?" Based on his clue and his earlier words about a lava spirit, Azzy tried to guess the answer.
But then, he shook his head, "no, it can't be. Even if its disguise is perfect, one can still able to sense its rank unless it completely suppressed its strength to zero.
Others may not able to find it out but during the earlier commotion, when I tried to sense the Volcanus king, I didn't find any other presence… Wait a second."
Something clicked in his mind, and he mumbled, "lava…"