Devour

[Spirit force increased]

As he drained the Abyss creature's spirit energy, Emery began to wonder if this skill could be used on other creatures. 

Of course, he was reluctant to use it on humans. But if it was capable of draining the spirit energy out of the Abyss creatures, given the abundance of them on the planet, it would indeed be of great help to fill up the 2,000 spirit force requirement needed for him to reach the magus realm.

The skill went on for a few minutes until finally, Emery felt as if there was a barrier that blocked his devouring ability within his core. Realizing this was his current limit, he decided to stop.

[Spirit force 1328 (1350)]

When Emery pulled out his claws from the body of the Abyss creature, he noticed its previously pale white skin had turned gray and wrinkled. It let out a shriek once again. But this time, the shriek seemed to be its death throe, as its body weakly tilted to the side and didn't move anymore.