QB On Target card:
Enter WROA0R as a code. Your Quarterback will have 100% accuracy for one half.
Lame Duck card:
Enter 5LAWO0 as a code. Your opponent will be forced to throw lob passes for one half.
Mistake Free card:
Enter XL7SP1 as a code. It will be impossible to throw an interception or fumble the ball for one half.
Block Field Goals:
You'll need a timeout to make this happen. When the kicking meter appears for the extra point or field goal, trigger your timeout. The center will snap the ball, but the kicker won't do anything and you'll end up with a block.
Thanks to Revolution Readers Devin and Jonathan!