Your latest fun team combination

Cosmic IM (485), Agatha (453), and Shang Chi (452) can winfinite and deal impressive damage. Not sure how much the match-4 pictured would have done beyond Hawk5ye’s full health bar in a challenge node.
If you start with a blue match, Agatha can add red tiles to the board, which starts boosting Shang’s match damage, then IM keeps firing his red and yellow (which feed themselves and each other), and generate more blue for Agatha. I’ve got purple AP coming from somewhere, too, so it becomes easy to max out Shang’s damage at ten combo points (Agatha is also boosting allies’ match damage by 30% every time they make a match) because the opposing team doesn’t get another turn. This means Shang’s purple makes loads of charged tiles along with placing a crit, which keeps feeding red and purple.