Crisis on Infinite Earths #12

The "Giant Final Issue Spectacular" banner says it all — this is where Marv Wolfman and George Pérez brought their universe-reshaping saga to its thunderous conclusion in 1986. Pérez's cover is a breathtaking cascade of DC's finest, with Superman, Wonder Woman, Batman, and dozens of heroes and villains swarming across a cityscape as a massive, monstrous figure — the Anti-Monitor — dominates the center, energy blasts and chaos erupting in every direction. It's a genuinely stunning piece of craft, inked by Pérez himself, that captures the sheer scale of what DC was attempting: nothing less than the reshaping of an entire comics universe.