Naturally, all of Aegis' troubles came from Nick.
He spread the rumors that the Right Arm was secretly asking for compensation.
Then, he disguised himself as random people who gave good hints that led to the capture of several Elders and Fanatics.
After that, he simply forwarded the information to Aegis.
He messed with the Icestorm and Inferno by simply giving them a couple of short illusions and placing some evidence.
What about the time the Wall's replacement was attacked by Death? Did Nick work with Death?
No.
Nick simply created an illusion of Death and dealt the damage himself.
Messing with the Champion was not difficult. He simply connected the Right Arm to the Champion.
He spread rumors that the Champion wanted more Zephyx from the people and that he was actually just another businessman.
He was like all of the others.
He just wanted to profit from the weak people.