Noah had expanded the number of Dimensional Rifts he could get his hands on vastly every time that he subjugated more beings.
From the Overseers that looked over entire Clusters of Stars and Realms to the single Dimensional Ruler Tomen he currently had under him...his plate was full for a whole two days just with these subjugated beings as he ran around adding more and more Rifts into Idle Mode!
Many of them were in the Diamond and Platinum Rank as their rewards couldn't compare to a single run of a WORLD Rank Rift like the Labyrinth of Chaos, but Noah could clear them in a much shorter period of time as there were also more of them.
This meant that he was getting Universal Law Crystals equivalent to the loot of the World Rank Labyrinth of Chaos from approximately 3 Elemental Rifts of lower levels!