Originally posted by FreshestSlice
Your quote doesn't prove that. It looks more like the ritual destroyed the planet and the Dark Side energy was by product.
Emperor consumed all biota, only he unleashed Force Drain on others. Others did not unleash Force Drain, they had no idea that Emperor wanted to eat them.
Lord Vitiate takes command of the Sith Empire, now in shambles following the Great Hyperspace War. He executes the Sith Council and consumes the life force of thousands of Sith Lords in a terrifying ritual that extends his life and vastly increases his capacity as a practitioner of the Force. (Star Wars: The Old Republic: Encyclopedia)
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Calling on the dark side, Lord Vitiate devoured them. He fed on their power, absorbing it into himself, utterly obliterating all traces of his victims. (Star Wars: The Old Republic: Revan)
Originally posted by FreshestSlice
That makes no sense. If he already was dominating them, he could have just drained them all then and there, and it most certainly wouldn't take 10 days to do.
Emperor swiftly drained others.
10 days were spent for this purpose:-
The ritual lasted ten days. Lord Vitiate orchestrated the sorcery and the planet Mediraas was consumed by the largest dark side nexus the galaxy would ever see. (Star Wars: The Old Republic: Encyclopedia)