If this is the first time you played a Fool's Gold this turn, this is worth 1 Treasure, otherwise it's worth 4 Treasure.
When another player gains a Province, you may trash this from your hand. If you do, gain a Gold, putting it on your deck.
At the start of Clean-up this turn, you may choose an Action card you have in play. If you discard it from play this turn put it on your deck.
When you gain this, put it on top of your deck.
Look at the top 4 cards of your deck. Discard any number of them. Put the rest back on top in any order.
Put a card from your hand on top of your deck.
When you gain this, put all Treasures you have in play on top of your deck in any order.
Discard a card.
Gain a Silver.
Look at the top card of your deck; discard it or put it back.
Draw until you have 5 cards in hand.
You may trash a card from your hand that is not a Treasure.
You may trash a Treasure from your hand. If you do, choose one: +2 Cards and +1 Action; or +2 Treasure and +1 Buy.
Discard 2 cards.
When you gain this, look through your discard pile (including this), reveal any number of Action cards from it, and shuffle them into your deck.
You may discard a Treasure. If you do, +3 cards and +1 Action.