When you complete the Daily Challenge, you’ll receive as part of the rewards an extra card you can use to improve your possibilities in Mighty Eagle’s Bootcamp!
This card changes daily depending on the Daily Challenge theme (if it’s Matilda Mayhem! the reward will be an extra card with Matilda).
If you complete King Pig Panic, you’ll receive one more card with one of the Extra Birds! This card varies every day as well.
Once you’ve gotten your extra cards, you can use them in Mighty Eagle’s Bootcamp, they are only available during the same day, so make sure to use them before they go away.
Pro tip: Make sure to play the Daily Challenge and King Pig Panic before your training of the day to make the best use of your rewards!
Note: You will only get the Extra Card for the birds you’ve unlocked and only once you’ve unlocked Mighty Eagle’s Bootcamp.