Quicksilver for Ben

So on reflection I'd probably drop Mean Swing as it's useless until Jarnbjorn is out, and even then it's only providing 1 damage over using any other card with Jarnbjorn's Response.

Everything else seems to work pretty smoothly. If I were to cut anything else it might be the second copy of Tenacity.

Other cards worth thinking about would be:

Superpower Training (if/when you have access to the set it comes from) as another means to get Friction Resistance into play.

Switching out Quincarrier for either Avengers Mansion or Helicarrier - Both would be more suited to multiplayer, but Helicarrier can't provide resources for the various triggers. Avengers Mansion is a case of more card draw, less reliable trigger options (but better than Helicarrier ), and a more expensive initial investment.

Hall of Heroes is always an option particularly in minion-heavy games.

Ironheart doesn't have the synergy of being an Avenger with Earth's Mightiest Heroes / Avengers Tower, but she's still cheap considering the card draw. Likewise Nick Fury is the same sort of thing, but harder to play.

Any other Avenger Allies are decent options too. I've tried to keep them cheap but there's stuff like Sentry who's expensive but seems pretty good for the price, or Valkyrie if minions are about.