Mulct Them Dry

Needs Legacy of Persia, and it's a 16-year farming operation by design. Appoint a vizier (right-click a tax collector, peacetime only). Extravagance modifiers stack in four tiers - Notable, Remarkable, Famous, Illustrious, checked every 12-18 months against the vizier's gold (100/200/300/400) - and the next tier only starts once four of the previous are held, so keep the vizier above 400 gold with intermittent gifts to make every roll count. Critically, pick a vizier who'll LIVE: if they die, the stacks die with them (though if you die, they persist). Four Illustrious modifiers banked, right-click, Mulct Vizier with Aggressive Auditing. Same government as Fiscal Responsibility - one campaign covers both.