"War Machines"

The holy light that flew up simultaneously formed a small angel halo above the celestials' heads, as if crowning them with something. 

And the strangest thing was...when the blood clan attacked these immobile celestials, all their attacks seemed to vanish into thin air. 

The holy light that didn't even cover the celestials' entire body actually 'purified' those attacks, no matter how unique those attacks were! 

This holy light was similar to the holy light around the queen's body when she summoned the sword of justice. 

Of course it would be similar. 

After all, the queen used her own blood and precious feather near the neck to refine the halflings' life forces into special holy light similar to the queen's holy light. 

If humans only had the energy from their energy core, then non-human creatures like the celestials, the elves and other creatures actually had other things they could use as energy.