Adui
You can have the edicit include an ability merges the aspect of conquest and fealty together. Something like this: < banner of tyranny???> Any who has sworn fealty to the tyrannical emperor can summon a banner of tyranny. When invading a foriegn reality/land summoning of the banner by the army commander provides a temporary increase of +10,000,000,000% to all parameters to the whole army. Upon complete conquest of the reality, planting the flag at the border of the reality provides the individual that summoned the flag ( in this case the commander of the army) an increase of 10,000,000,000% to all parameters and 1,000,000,000% increase in realm progression when cultivating in the conquered reality. These boosts are valid so long as the flag is planted. If the conquered reality is lost, the flag will automatically fall and the boosts negated. The architect of the edicit gets an increase of 100% in the daily production of the essence of reality for every conquered reality a flag of tyranny planted in it. P.S. this is a bit more complicated but you can also have each flag unique to the individual to summoned it and having the flags upgrade in tier( giving higher boosts) when the summoner reaches a certain number of conquered realities. ( this is something reminiscent of the titles of baron, viscount, and duke one would get when comprehending and assimilating the dao of fealty). This will produce a healthy competition between the followers of Noah.