The standing Order of the Sith, consolidated following the Sith Schism of 864ABY. Once led by a Warlord Council, the Sith Empire was consolidated after a lengthy series of civil wars, coups, and assassinations. Culminating in the betrayal of Darth Carnifex and Darth Ophidia - Darth Empyrean took absolute control over the Order and declared himself Sith Emperor, Dark Lord of the Sith, and more unofficially - the Dead God.
The Sith Order stands now as a beacon for Sith across the galaxy - to convene and collaborate in the destruction of the Alliance, the Mandalorians, the various Resistance groups that continue to fight against them. The death of the enemy is paramount to all, at least publicly, while the internal structures of the Sith breed contempt and betrayal in line with how they have functioned for thousands of years. Where once, Sith were led by the Rule of Order, now only the continuous upheaval and reintegration of strength persists.
Take control of a Legion at the Assembly's behest, conquer a world and declare yourself its Lord, and play politics with Sith who look to betray you as much as gain from you. There is nothing stopping your rise from Acolyte to Emperor but your own ambition, intelligence, and commitment.
Check out our Sith Handbook