Foil Cards

From PackRat Recipe Wiki

Foil cards are identical to normal cards except they have images in the border of the card that relate to the family of that card. They are extremely rare, so it is best that you hang on to them.

Foil cards can be found in the markets, on bonus draw cards and even on cards made by a recipe. You won't know it is a foil until you get the pop up congratulating you on your purchase or made recipe. The one exception to this is a foil card that has ended up in the rats or is in another person's pack. These cards you will be able to tell are foil before you pick them up.

Vaulting a foil will give you a point value bonus equal to 200% of the face value of the card.

NOTE: If you're lucky enough to find/buy a foil, do not do not do NOT use it in a recipe!! The resulting card will have the same chances as every other card of becoming a foil (ie, super rare), and so it is -almost- guaranteed to lose its foilyness!!