Get a "Gold" in the following drills in mini-camp mode to unlock the corresponding card:

#3: All-Madden Chase and Tackle
#16: All-Madden Pocket Presence
#28: All-Madden Coffin Corner
#36: All-Madden Ground Attack
#40: All-Madden Precision Passing
#52: All-Madden Swat Ball
#58: All-Madden Clutch Kicking
#96: All-Madden Trench Fight
#194: Chase and Tackle
#195: Ground Attack
#197: Clutch Kicking
#199: Swat Ball
#208: Pocket Presence
#209: Trench Fight
#210: Precision Passing
#211: Coffin Corner