Does the questioner want to ask "What items are dropped by the Avengers Challenge Card"? Avengers challenge cards can drop anti-armor grenades, flashes, and rifles. According to the official website of Marvel's Avengers, we learned that the Avengers challenge cards can drop anti-armor grenades, flashes, and rifles. The game "Marvel's Avengers" is based on the world-famous superhero comics Avengers. It tells the story It tells the story that happened after A-Day.