It's based on insidious (slow, subtle, gradual harm)& and assiduous (constant application & attention to detail,relentless & to sit or wait until task is finished)combined, combined with the new sithSith philosophy, — the rule of two, — to sit &wait &work, wait and work in secret at histhe whole plan to simply destroy the Jedi as(as was the sithsSith’s original goal).his
His character believed he was the sithariSithari — the chosen one of the sithSith, the culmination of 1000 yrsyears of sithSith evolution learnt thru. He learned through his prolonged study of knowledge of sithSith history to renew the way the sithSith operated with unlimited power to cultivate.
He cultivated a small but powerful Sith Order to use against the Jedi he developed a small but powerful sith order &and entered politics to work in secret but plan(but in plain view as a senatorSenator) to infiltrate the republic & the jedi discreditRepublic. The discrediting of the Jedi was his whole plot, combined with orderOrder 66 so he was only left with a small number of Jedi to deal with in his rise to power, which he totally orchestrated & manipulated thruthrough controlling the war as the villain &theand the hero by keeping battles even to prolong the war &and exhaust the Jedi.also
Also so much study intoof the dark sideDark Side made him pure evil as he was able to train with his master for decades to learn all he cudcould to prepare himself for his plan to become emperorEmperor by gaining power thruthrough the illustrious career of starting &and controlling outcomes of war, slowly guiding events to align with his plan until he cudcould gain emergency power to execute orderOrder 66 the. The phantom menace was his beginning as the new improved sithSith & mastermind of the republicRepublic.