Infinity Gems
The Asgardian god Loki enters the Ultraverse and collects the Infinity Gems from the possession of various Ultraverse's heroes, also discovering the existence of a seventh Gem: Ego. Loki learns the Infinity Gems were originally part of a gestalt entity known as "Nemesis". The Ego Gem possessed the Avenger Sersi when she arrived to Ultraverse from Earth-616.