This greed appeared very suddenly. After all, the Holy Crest Sect's Grand Supreme Elder only had his avatar here, which paled in comparison to his true body. Despite it having some power that a cultivator at the Soul Conduit realm would have, it could only deal with ordinary Nascent Soul cultivators. It was impractical to even think about fighting Wang Baole.
Besides, he could be said to have seen firsthand how Wang Baole attacked, as well as the weird and painful deaths of the four centipede-like mutants. All of this would make any ordinary person with a bit of common sense give up all thoughts that they shouldn't have.
However, this avatar of the Holy Crest Sect's Grand Supreme Elder still developed uncontrollable greed. This greed was akin to flames, rapidly engulfing him and eating away at his reason.