So I was thinking I like the concept of a card or somesuch that lets the players change things, similiar to how some games handle action or drama points. I like the idea of them being able to do some sort of boon to change things in their favor. I was contemplating "action cards" or some such, and as I don't know of any d20 product like this have endeavored to maybe make my own. I'm thinking stuff like "Twist of Fate: You can change any roll to a natural 1 or natural 20" or "Back from the brink: instead of hitting negatove hp, you are left at 1 hp" or somesuch. I know Ive seen mechanics similiar somewhere before and possibly even the names. If there is already a product like this please point me to it, however if not what are some other cool "cards" that we can make?