Avengers #323 1990

Avengers #323, published by Marvel in September 1990, continues "The Crossing Line" storyline. Following a nuclear explosion, Shaman of Alpha Flight traps the blast, along with the Avengers, their allies, and terrorists, within his mystical pouch. The heroes are scattered across dangerous dimensional pockets, contending with radiation and the newly introduced villain group, the Combine, as they seek a way back to their own reality. This issue is notable for the first appearance of the Combine.