If a hero had been set aside but then returns to hand/deck/discard pile, is the hero reset to a status of has not been set aside? For example, can my Persian Presidents capture an Angel that was in Chamber, was returned to my draw pile, and is now in my territory?
Persian Presidents
"Capture a Hero that was or is set-aside. CBN if Lion's Den is in play."
Chamber of Angels
"Set this Fortress aside. Any of holder's Angels that are discarded are placed here instead. After two turns, return Angel to top of draw pile."