AVENGERS (1963) #337

The Avengers face defeat at the hands of the Brethren. Crystal of the Inhumans is allowed to join the team at the request of Quicksilver. Sybil Dorn, lover of Thane Ector, attacks Sersi in a fit of rage! Plus, the origin of the Brethren revealed! The Collection Obsession Part 4 of 6. As Hank Pym continues to monitor his teammates, Black Panther Beast, and Quasar, who are continuing to search through the Collector’s mini-ecosystems.…