qnli question: What team of artist and writer helped popularize the Uncanny X-Men line of comics in the 1980s? sentence: Shooter brought Marvel into the rapidly evolving direct market, institutionalized creator royalties, starting with the Epic Comics imprint for creator-owned material in 1982; introduced company-wide crossover story arcs with Contest of Champions and Secret Wars; and in 1986 launched the ultimately unsuccessful New Universe line to commemorate the 25th anniversary of the Marvel Comics imprint.