The blood bats and the ovarian parasites swarmed toward Lith.
These were the creatures of the tribulations and were in a berserk state. Their killing intent was at its peak and they wouldn't be at ease unless they killed Lith.
Lith had lost a lot of his spiritual power and only around thirty percent of the original amount was remaining.
The summoning of the core and its formation, followed by the battle with the bugs and eagles drained his energy quickly.
Formation of the core was the major cause of spiritual power depletion. Lith couldn't stop that even if he wanted as it was an automatic process.
The core would keep consuming the spiritual power of the body and the elemental energies from the body as well as the surroundings.
If the person has all his elemental energies and spiritual power exhausted, he would simply die.