Issue #121 has two 8-pagers. Neither are featured on the cover.
The first one is an Atlantis-without-Namor story where someone other than Namor foils an attempted coup by Attuma. I suppose that’s a worthy entry to this series, because it’s kind of a “deep cut” into the Marvel Universe. But it’s a pretty uninspired story. Written by Karl Bollers, art by Mark Moretti. Grade: D.
The second short story in #121 features Mirage, formerly of the New Mutants. Jaye Gardner and Joe Madureira tell a story about when Mirage was a valkyrie, a part of her history that’s rarely explored. Good idea, mediocre in execution. C-.