Marvel United
Can a hero who is not on a team's roster use that team's Team cards?
The designer answered this directly in a reply about team rosters.
- tanis · Designer · 2024-07-06
Not by the rules: a hero who is not on the team ignores all of that team's Team cards. A group that wants the new hero to join the team can house-rule it, since the game is theirs to adjust.