The results are in! As a reminder, here was the objective for this challenge:
Create a one-shot card. This is a card that trashes itself, returns itself to its pile, or sets itself aside permanently when played. The card must always do this when played; it can't, for example, only trash or return itself under certain circumstances, or if the player chooses a particular option. You may only submit a single card -- that is, you can't submit multiple cards that work together (such as Pillage and Spoils).
You may not include an event clause that undoes the effect of the trashing/returning. For example, "When you trash this, gain a copy of this card from the trash."
Let's not delay. Your winner is....
#1 - Mountain Pass by
eHalcyon with 18 points
(Fletcher)$2 - Action
Trash this and another card from your hand. All cards cost $2 less this turn, but not less than $0.
It was a close one, but eHalcyon ekes out the win by a single point. It's a one-shot Bridge-type card that also trashes. Without +Buy, it's a one-shot Silver with light trashing; late in the game, you can perhaps put together a megaturn, although getting all the pieces in place is a touch tricky since you have to have a card in hand to sacrifice to it.
The rest of the ballot:
#2 - Thanksgiving by
Tdog with 17 points
(Quin)$5 - Action
Trash this card.
Gain up to 2 cards costing a total of 7. Put the cards on your deck.
#3 - Diplomat by
Kirian with 15 points
(Warshawski)$3 - Action
+$1
Trash this card.
--
When you trash this, choose one: trash up to three cards from your hand; or +3 Cards; or gain a Spoils.
#4 - Foundry (1) by
Archetype with 12 points
(Magnum)$4 - Action
+2 Cards
Trash this and 3 other cards from your hand.
#5 (tie) - Loan Shark by
Polk5440 with 10 points
(Stone)$0 - Action-Victory
Return this to the supply.
Worth -1 VP
--
When there are at least two Loan Sharks in the supply, when you buy a card, you may pay $1 less than its current cost. If you do, put into your discard pile two Loan Sharks from the supply.
#5 (tie) - Full House by
popsofctown with 10 points
(Charles)$2 - Action
Trash this card. Reveal your hand. If there are no duplicate cards in it, gain a copy of each Action or Treasure you revealed this way.
#7 (tie) - Sparkly Vampire by
Bella Cullen with 9 points
(Tracy)$6 - Action
+1 Card
+1 Action
When you play this, trash it. If you do, gain a Prize or a Gold. You may put your deck in the discard pile.
--
You cannot buy this if you have any Copper in play.
#7 (tie) - Manservant by
jamespotter with 9 points
(Mason)$5 - Action
+1 Action.
Trash this card. If you do, reveal an Action card from your hand and choose one: +coins equal to the card's cost and +1 buy OR gain a copy of the card and play it immediately.
#9 (tie) - Windmill by
angrybirds with 8 points
(Columbo)$3 - Action
Trash this card and gain a card costing up to $1 more than the cost of this card.
You may also trash a card from your hand in addition to this. If you do gain an additional copy of the card gained.
#9 (tie) - Magistrate by
One Armed Man with 8 points
(Chan)$2 - Action
Choose 1: +2 Cards or +2 Actions.
Trash this card. Move the Magistrate token to the top of a non-Magistrate Supply pile.
--
Cards from the Supply pile with the Magistrate token have no effect when played. At the beginning of each player's Buy phase, that player can discard from their hand any number of cards from that pile for +$1 each, +$2 each instead if they are Kingdom cards.
#9 (tie) - Squatter by
Saucery with 8 points
(Carter)$1 - Action
+1 Action
Return this card to the supply.
--
If you gain this card during your turn, you may return it to the supply immediately. If you do, each other player gains a Squatter.
#12 (tie) - Badge by
nopawnsintended with 7 points
(Wimsey)$2 - Treasure-Victory
Worth $2 and 0.5 VP. When you play this, return it to the supply.
--
When you gain a Scout, you may gain two Badges.
--
Setup: Add Scout as an extra Kingdom card. There are 20 Badges.
#12 (tie) - Foundry (2) by
PurplePotato with 7 points
(Spenser)$5 - Action
Trash this card. Choose one: Gain two cards costing up to $4 each; or gain three cards costing up to $3 each; or gain four cards costing up to $2 each.
#12 (tie) - Facade by
Graystripe77 with 7 points
(Poirot)$4 - Action
+1 Card
+1 Action
Place this on top of any supply pile.
--
(Rules clarification: When this is on top of a pile, this must be bought before any cards underneath.)#15 (tie) - Usurper by
Watno with 6 points
(Silver)$6 - Action
You may choose an Action card from your hand. Play that card 4 times.
Trash this card as well as the card you chose.
#15 (tie) - Piste Town by
NoMoreFun with 6 points
(Hardy)$1 - Action
+$1
+1 Buy
Choose one: +2 Cards or +2 Actions.
Return this card to the supply.
#15 (tie) - Grandkid by
Guy Srinivasan with 6 points
(Bobbsey)$2 - Action
Trash this. Reveal cards from the top of your deck until you reveal an Estate. Trash the Estate. Discard the revealed cards.
#18 (tie) - Leper by
Adrienaline with 5 points
(Vance)$P - Action-Plague
+1 Card
+1 Action
Gain a Curse.
The person to your left gains this card.
--
If you trash this card, discard a card.
When you buy this card, return it to the supply. Everyone else gains a copy.
#18 (tie) - Henge by
Mecherath with 5 points
(Templar)$5 - Action-Victory
Trash this card. Take an extra turn after this one.
This can't cause you to take more than two consecutive turns.
--
Worth 2 VP
#18 (tie) - Supremacy by
Qvist with 5 points
(Monk)$2 - Action
Trash this. Trash a card from the supply that is not a Victory card.
+$1 per differently named card in the trash.
#18 (tie) - Freedom Village by
Powerman with 5 points
(Lanyard)$4 - Action
+1 Card
+2 Actions
Trash this card. Gain 2 Tokens on your Freedom Village mat.
--
At the beginning of any turn, remove any number of tokens from your Freedom Village mat. +1 Action per token removed.
#18 (tie) - Archduchy by
Sakako with 5 points
(Brown)$4 - Action-Victory
Trash this card. Gain a Victory card costing up to $6.
--
Worth 2 VP
#18 (tie) - Lifeboat by
RobertJ with 5 points
(Beresford)$4 - Action
Choose one:
+2 Actions;
+$1, +1 Buy;
trash your hand.
--
When you gain this, set it aside; you may add it to your hand at the start of any of your future turns.
--
When you play this, return it to the supply.
#24 (tie) - Rag-and-Bone Man by
Davio with 4 points
(Temple)$3 - Action
Name a card. Look through your discard pile and trash all copies of the named card.
Trash this card.
#24 (tie) - Expedition by
dnkywin with 4 points
(Spade)$5 - Action
Trash this card. Gain a Gold on top of your deck. Each other player gains a Silver.
#24 (tie) - Pyromancer by
JFugue with 4 points
(Drew)$3 - Action-Attack
+2 Cards
You may trash up to two cards from your hand. If you trash at least one card in this way, every other player gains a Curse.
Return this card to the supply.
#27 (tie) - Keep by
Schneau with 3 points
(Withers)$3 - Action
+1 Action
Trash this card.
--
When you trash this card, set it aside. At the start of your next Buy phase, +1 Buy, +$3, and put this card in the trash.
--
(Rules clarifications: When you put this card in the trash after it was set aside, you are not trashing the card, so the "When you trash this card..." clause doesn't take effect.)#27 (tie) - Druid by
Fragasnap with 3 points
(Moto)$2 - Action
+2 Cards
Trash this and a card from your hand. Name a card. Reveal cards from the top of your deck until you reveal the named card, and then trash it. Discard the other revealed cards.
#29 (tie) - Donation by
heatthespurs with 2 points
(Wolfe)$2 - Treasure
Worth $1
When you play this, trash this together with any number of cards in play or from your hand costing $0.
--
When you gain this, you may play it immediately.
#29 (tie) - Voodoo Hut by
ignorentmen with 2 points
(Shayne)$5 - Action
Trash this card. If you do, gain two action cards, the first to your hand, the second to the top of your deck. You cannot use this card to gain another copy of this card.
#29 (tie) - Old Tree by
brokoli with 2 points
(Marple)$3 - Action
+$2
Trash this.
Reveal any number of Victory cards from your hand. +$1 per Victory card revealed.
--
When you buy this, put your deck into your discard pile.
#29 (tie) - Redecorate by
Tables with 2 points
(Marlowe)$5 - Action
Put your deck into your discard pile. Search your discard pile, reveal up to two cards costing up to $6 from your discard pile or hand and trash them. For each trashed card, gain a card costing at most $1 more than the trashed card. Then trash this card.
--
(Rules clarification: You are not restricted to either your hand or discard pile. You may choose to trash a card from your hand and a card from your discard pile.)#29 (tie) - Piggy Bank by
DWetzel with 2 points
(Holmes)$3 - Action
When you play Piggy Bank, trash it.
Choose one: place any number of Treasure cards from your hand on your Piggy Bank mat; gain a Gold, placing it on your Piggy Bank mat; or place all cards on your Piggy Bank mat in your hand.
--
Setup: each player gets their own Piggy Bank mat if Piggy Bank is in play. At the end of the game, return all cards on Piggy Bank mats to their owner's deck.
#29 (tie) - Pantry by
yuma with 2 points
(Dupin)$4 - Action
+$1
Trash this card. If you do, you may put your deck into your discard pile and trash up to four cards from it. After sorting through it, reshuffle your draw pile.
#29 (tie) - Blessing by
Destry with 2 points
(Blackie)$3P - Action-Looter
Gain a Ruins to your hand.
Set this card aside. If you do, place a Ruins on it.
Return them to your deck at the end of the game.
--
When you play the first action of your turn, play it as if your set-aside Ruins' texts were added to the bottom of the card in the order you decide.
#29 (tie) - Investment by
PenPen with 2 points
(Alleyn)$4 - Treasure
Worth $2
Trash this card. Gain a Silver, and the player to your right gains a Gold.
--
When you would gain this, the player to your left gains this card instead, and only that player can gain this card.
--
(Rules clarification: The player to the left cannot have the player to HIS left gain this card, he is the sole person gaining the card. Reactions to card gains apply in this situation however, e.g. Watchtower. When this card is played, the original buyer of this card will gain the Gold, and the "player to the left" gains the Silver.)#37 (tie) - Tax by
Michaelf7777777 with 1 point
(Rockford)$4 - Action-Attack
Each other player reveals their hand and trashes half their treasure cards (rounded down). Put all treasure trashed in this way into your hand.
Trash this card. Put a tax token on top of a kingdom supply pile.
--
Kingdom cards cost $1 more per tax token on that pile.
#37 (tie) - Brush Fire by
zahlman with 1 point
(Queen)$5 - Action-Attack
Trash this. You may trash a card that is neither a Curse nor a Ruins from your hand; if you do, +1 VP. Each opponent may trash a card that is neither a Curse nor a Ruins from his hand. If he does, he gains a Curse in hand; otherwise, he discards his hand.
#37 (tie) - Transform by
Tejayes with 1 point
(Morse)$P - Action
Choose one: +$3; or +$P.
Trash this card. If you do, choose one: put a Transform token on any pile without one on it; or remove a Transform token from any pile with one on it.
Cards in piles with Transform tokens cost $P less and $3 more if it has a Potion in its cost; otherwise, it costs $P more and $3 less (but not less than $0).
--
(Rules clarification: If no piles have a Transform token on it, you must put a token on a pile. Eligible piles for Transform tokens include Supply piles, non-Supply piles such as Madman, the Black Market deck, the trash, and players' decks. For tokens on players' decks, the effect extends to that player's hand, play area, and discard pile. Once a card is removed from a Transformed pile, its cost reverts to normal until placed in another pile with a Transform token.)#37 (tie) - Royal Wedding by
Fuu with 1 point
(Falcon)$6 - Action
+2 Cards
+2 Actions
+$2
Trash this. If you do, each other player with 5 or more cards in hand draws a card, then passes a card from his hand to you.
#37 (tie) - Charlatan by
ashersky with 1 point
(Dover)$4 - Action-Attack
+$1
Return this card to the supply.
Choose one: +1 Card, +1 Action, each other player gains a Curse; or, +2 Cards, +1 Buy, each other player draws a card, then discards two.
--
When you gain or trash this, each other player gains a Copper.
#37 (tie) - Mercantile Exchange by
Darthcaboose with 1 point
(Campion)$3 - Action
+$1
At the start of Clean-up this turn, if the +$X gained from all Action cards in play is greater than the coins provided by Treasure cards in play, gain a Treasure card costing up to the sum of all +$X in play and coins provided by Treasures in play. Otherwise, gain an Action card costing up to the sum of all +$X in play and coins provided by Treasures in play.
--
When this is in play, instead of discarding it during Clean-up, trash it instead.
#37 (tie) - Shape Shifter by
Schlippy with 1 point
(Bradley)$6* - Action
Trash this card and up to 4 cards from your hand. Gain 2 cards that together cost up to as much as the total cost in coins of all cards trashed this way (including this).
--
This costs $1 less for every copy of this card that is in the trash, but not less than $0.
--
(Special design considerations: This card is handled like a Prosperity card, so it increases the chances of playing with Platinum and Colonies if this is in the game.)#44 (tie) - Banquet by
Rush Clasic with 0 points
(Hammer)$4 - Action
Trash this card. Gain a random card costing up to $2 more than this.
#44 (tie) - Shapeshifter by
Titandrake with 0 points
(Drummond)$4 - Action
+$1
--
Setup: At the start of the game, place the Shapeshifter token on the Shapeshifter supply pile.
--
Whenever a Shapeshifter is played, play it as if were a copy of the card with the Shapeshifter token on it. The played Shapeshifter is that card until it leaves play. Then, its owner gets +$1, sets Shapeshifter aside, and moves the Shapeshifter token to an Action card in the Supply. Trash the set aside Shapeshifters at the end of the game.
--
(Rules clarification: The Shapeshifter token cannot be moved to an empty supply pile. If the copied supply pile runs out, Shapeshifter is still a copy of that card. The +$1, setting aside, and moving happens after the effects of the copied action.)