The man fought for his life against this mysterious living weapon for hours before, the energy inside it finally exhausted. At the same time, the whole area is turned into a wasteland from their fight and creates many deep ravines.
After the spear loses its power, it falls into one of the crevices as the Earth itself swallows it. Angus knows that until his life ends in the past, the spear will never be found again, no matter how hard they search for it.
This spear is the same spear artifact that Angus threw before he passed out. After the fight ends, the man looks at all the obliterated wasteland and traces of the human parts all over the area with lifeless eyes before screaming in agony.
If it is not because of the enormous rainstorm in the area, Angus will definitely see the tear from the man's lifeless eyes.