The death laws, pulling at living souls like a devouring abyss, make the Greed Devil's body tremble momentarily before he regains control. Any lingering doubt in his mind that Aldrian was responsible for triggering the heavenly tribulation vanishes, now he is certain that this young man is the real deal.
The same chilling sensation he felt when he saw the swirling black energy reaching the sky before the tribulation returns, though this golden-black energy feels more refined and oppressive. He doesn't know exactly what kind of golden or black energy this is, but he knows it signals danger.