I also forgot the Sith technique of creating illusionary armies that could affect the real world, or make enemy armies think their weapons have turned into snakes or other deadly animals. A technique used to conquer nations like the Republic, both Naga Sadow and Aleema Keto used this technique. Or the dopplegangler technique with which a darksider could make an illusionary clone of himself that could interact with the physical world, Luke used this in Dark Empire.
Another thing Sith did to protect the necropolis on Korriban was to create a permanent blight on the area that anyone killed there would have their souls trapped and tortured for all eternity only to rise when a non-darksider entered the area to reanimate their bones strike them down, cursing them to become a guardian spirit infesting their skeletal remains as well.
Also there was the ritual that Darth Bane used on Russan which unleashed a malstrom of destruction across the planet to kill the Jedi. Of course this took other darksiders combining their powers with his but at least it won't hunt you down if the ritual is interupted. Or the thought bomb that Dark Lord Kaan used on the Jedi at the end of the Battle of Rusaan. A powerful Dark Side construct created by a group of darksiders and tied to the will of the one to initiate it. When detonated it unleashes a powerful blast of Force energy that kills all Force-sensitives in the blast radius and traps their souls in eternal torment for all time. Of course unknown to Kaan or the rest of the Brotherhood of Darkness the bomb also kills the users but Darth Bane didn't really tell them when he gave them the technique. :evil2:
There are plenty such people, mostly though in the past.
Grand Admiral Thrawn nearly crushed the galaxy. In Fall of the Sith Empire Gavin's betrayal of Naga Sadow caused the defeat of the Sith in the outset of the Great Hyperspace War. Darth Bane instituted the "Rule of Two" as a way of eliminating the indemic infighting amongst the Sith while keeping them true to the nature of the Dark Side. Odan-Ur founded the Jedi library on Ossus, where Jedi could share their knowledge freely. Exar Kun combined lightsaber combat with Sith magic, resulting in the Sith switching from using the alchemetically empowered Sith swords to the lightsaber becoming the standard.
I highly recommend to anyone interested in the Sith to read the novel Star Wars: Darth Bane: Path of Destruction by Drew Karpyshyn, writer/designer of KOTOR. It really gives you insit of the Dark Side and esspecially on the Sith.
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