Disappearing money is an informal term for non-terminal Action cards that give + and do not give +Cards. They resemble most Treasure cards in that they give + and reduce handsize when played, and any number of them can be freely played on a turn; but unlike Treasure cards they can "disappear" from your hand before other Action cards are played. They therefore fit well into engine strategies that depend on Action cards that benefit from, or can compensate for, reduced handsize. Since they do not draw, however, having too many of them in your deck may prevent you from drawing your other engine components when you need them.
Many strategies that benefit from disappearing money also benefit from cantrip money; which of the two is better for an engine will depend on how the other engine cards interact with reduced handsize. Disappearing-money cards usually have lower costs than Peddler variants that provide the same amount of + , to compensate for the lack of draw.
Engines which benefit from disappearing money
- Terminal draw cards that draw up to a specific handsize: Library, Watchtower, and to a lesser extent Jack of all Trades.
- Tactician, especially the double Tactician engine: since playing Tactician discards your whole hand, it's desirable to be able to play -giving Actions before you do so.
- Minion, which discards your hand and draws up to a specific handsize—and can function as disappearing money itself to boot, making Minion in effect a single-card engine.
- Menagerie: unlike Treasure, you can have any number of copies of the same disappearing-money Action and play them all before Menagerie to create a hand with no duplicates.
- Scrying Pool: since a Scrying Pool engine can draw arbitrarily many Actions with ease, it matters less if the -producing Actions don't provide draw themselves.
List of cards that can provide disappearing money
- Oasis is a Peddler variant that discards a card from your hand, and thus it reduces handsize in the same way the cards above do. It can be thought of as a cantrip that turns another card in your hand into "disappearing money".
- Junk Dealer is a similar handsize-reducing Peddler variant that trashes from your hand instead of discarding.
- Tribute can provide disappearing money, but it is not under the player's control whether it does so.
- Candlestick Maker disappears and provides Coin tokens, which may be used immediately for + or saved for a later turn.