Once there was a time where every apprentice with incomplete training was worth thousands of soldiers. The high tier Sith Lords were then obviously worth millions. Some bald weirdo with black lung came in, didn't get to grab Githany by the pwssy and decided to destroy them all in order to find a small child and make them play with his lightsaber.
He had an apprentice who's Sith name meant "whore" but actual name meant liquid that falls from the sky. Coincidentally, this man's best speed feat is deflecting liquid that falls from the sky. So he's really good with an umbrella.