I would remove Expert Defense as Desperate Defense is a better card if you want to defend for your friends in a multiplayer game. And I would get rid of Warning as you already have several ways to heal and/or prevent damage(ae: Defensive Stance). this will reduce the amount of cards in your deck giving an increase in chances to get your captain America cards and Armored Vest. Overall, it looks like a good deck
I would remove Expert Defense as Desperate Defense is a better card if you want to defend for your friends in a multiplayer game. And I would get rid of Warning as you already have several ways to heal and/or prevent damage(ae: Defensive Stance). this will reduce the amount of cards in your deck giving an increase in chances to get your captain America cards and Armored Vest. Overall, it looks like a good deck