He seemed to grow in size, density and darkness, like he was sucking energy from his surroundings.

I could feel the sucking energy of the spell, trying to breech my defenses, to feed on me, too.

Their tendrils snaked out into the sky, silhouetted against the midnight moon as if sucking energy from its dark light.

And in shock. Sucking energy off the priest, he was becoming manic.

"And you started sucking energy off of Damian," he said.