When you play this, you may play a treasure from your hand twice. If you do, trash that Treasure.
Counterfeit is a Treasure card from Dark Ages. It functions a bit like a Procession for Treasures, allowing you to play another Treasure card twice and then trash it. Instead of allowing you to gain a new card to replace the trashed card, however, as Procession does, Counterfeit merely gives + and +1 Buy instead. Early in the game, Counterfeit can function like Moneylender, allowing you to trash Copper for a total of + ; in the endgame, it acts more like a trash-for-benefit card like Remodel, allowing you to trash Gold and Platinum to boost yourself toward Province and Colony.
 Official FAQ
- This is a Treasure worth .
- You play it in your Buy phase, like other Treasures.
- When you play it, you also get +1 Buy, and you may play an additional Treasure card from your hand twice. If you choose to do that, you trash that Treasure.
- You still get any that Treasure gave you from playing it, despite trashing it.
- If you use Counterfeit to play Spoils twice, you will get + , (in addition to the , from Counterfeit) and return Spoils to the Spoils pile; you will be unable to trash it.
- If you use Counterfeit to play a Treasure that does something special when you play it, you will do that thing twice.
- Cards with two types, one of which is Treasure (such as Harem from Intrigue) are Treasures and so can be played via Counterfeit.
 Other Rules clarifications
- If you use Counterfeit to play a treasure which has an effect while in play, you no longer receive that card's in-play bonus, as it has been trashed. For example, if you use Counterfeit to play Quarry, you receive from playing Quarry twice, but Quarry is trashed and action cards are not reduced in cost.
 Strategy Article
An obvious way is as a nonterminal Moneylender. If you play Counterfeit and trash a Copper with it, you get at total of + , as well as +1 Buy. Pretty good. Being nonterminal is why it costs and not . As the game goes on, you may use Counterfeit to trash Silvers (for total) or even Golds (for a whopping )—Moneylender can't do those things! In those cases, it's like a better Salvager. Depending on the Kingdom, it could find uses in both engine-like and Big Money–like strategies.
Its major downside is its cost, since atit'll rarely be an opening, and it will face stiff competition from other -cost cards.
Of special note is its interaction with Spoils. Since Spoils returns to the Spoils pile after being played, there is no downside to Counterfeiting it on its way out!
- Moneylender, Loan, Spice Merchant compete with it for Copper-trashing.
- Quarry, Talisman, Royal Seal, and Hoard have abilities that depend on them being in play. Playing them with Counterfeit removes them from play, negating their abilities.
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 Secret History