These are the seven cards that were included in the Specialty Hobby version of Marvel Fluxx, which sold out in the summer of 2021. If you have the mass-market edition, which doesn't have the yellow starburst, these are the cards you are missing that had been included in the Specialty Edition.

Keepers: Miles Morales, Nick Fury, Phil Coulson

Goals: Spider-Verse, Avengers Assemble, Agents of S.H.I.E.L.D., Captain America's Biggest Fan