Hawkeye 'Pool

Avengers Tower + Government Liaison + Helicarrier makes Mockingbird free to play attack or thwart and then Quincarrier makes it free to use her ability. Sky-Destroyer makes playing her deal 2 damage. Healing Factor is great for allowing Hawkeye to not worry about indirect damage. Stick-To-Itiveness lets him fire multiple arrows or attack when arrow resources don't line up. If you manage to have extra cards in your hand Tic-Tac-Toe and Blackout allow you to use them to deal with anything extra from encounter cards and Mulligan allows you to use all your cards on the enemy turn and then get a full hand back. If somehow things go to pot you still have Git Gud in your back pocket to reset any player would be defeated. Blade and War Machine also benefit from Avengers Tower + Government Liaison + Helicarrier +Quincarrier combo if you think you can go a round without the full combo on Mockingbird making them free to play as well. War Machine procs Sky-Destroyer.