Collects Avengers (1963) #164-177, Annual (1967) #7, Marvel Two-In-One Annual (1976) #2. Jim Shooter and an unparalleled team of avenging artists—George Pérez, John Byrne, Jim Starlin and more—bring you Earth's Mightiest Heroes at their best! This Marvel Masterworks volume is packed with classic encounters staged on a truly massive scale: Jim Starlin's defining Thanos War, Ultron's revenge, the cosmic Korvac Saga—it's a dizzying array of iconic adventures! Luckily, the Avengers aren't alone as they face these challenges—they're joined by the Guardians of the Galaxy, the amazing Spider-Man and the ever-lovin' blue-eyed Thing! Also featuring Adam Warlock, Gamora, the Collector, the Lethal Legion, Count Nefaria, a new look for Wonder Man, and the unfolding secret origins of Quicksilver and the Scarlet Witch!