Inflation
Permanently raise prices by
$1 on every purchase
Credit Card (Go up to {{hl|red|-$20}} in debt Common Economy N/A (Passive) Credit Card.png)Banned
Vouchers:
Clearance Sale (All cards and packs in shop are {{hl|orange|25%}} off Base Clearance Sale.png),
Liquidation (All cards and packs in shop are {{hl|orange|50%}} off Redeem at least 10 Voucher cards in one run Upgraded Liquidation.png)Inflation is a Challenge Deck. Each time a card is purchased, the prices of all items will be increased by $1. Note that this also includes the base price of held Jokers and Consumables, meaning their sell value will also slowly increase.
Starting Contents
The starting deck contains the standard 52 cards, as well as a Credit Card (Go up to {{hl|red|-$20}} in debt Common Economy N/A (Passive) Credit Card.png).
Synergies
As each purchase increases the price of future items, it is important to pick up disposable Jokers to clear early Antes, then sell them once better ones are available (preferably scaling Jokers).
Egg (Gains {{Money|3}} of {{Hl|orange|sell value}} at end of round Common Economy N/A (Passive) Egg.png) and 
Gift Card (Add {{Money|1}} of {{hl|orange|sell value}} to every [[Jokers|{{hl|orange|Joker}}]] and [[Consumables|{{hl|orange|Consumable}}]] card at end of round Uncommon Economy N/A (Passive) Gift Card.png) can inflate selling prices greatly and can recover money after making an expensive purchase.
Swashbuckler (Adds the sell value of all other owned [[Jokers|{{hl|orange|Jokers}}]] to Mult <br> {{currently|{{mult|+1}}}} Sell a total of {{hl|orange|20}} Joker cards Common Additive Mult Independent Swashbuckler.png) will provide a high amount of + Mult since it will scale when other Jokers' prices inflate.
Riff-Raff (When [[Blind|{{hl|orange|Blind}}]] is selected, create {{hl|orange|2}} [[Common Jokers|{{hl|blue|Common}} {{hl|orange|Jokers}}]] <br> {{room}} Common Effect On Blind Select Riff-Raff.png) is an excellent source of money since the generated common Jokers still inherit the inflated sell prices.
Ceremonial Dagger (When [[Blinds|{{hl|orange|Blind}}]] is selected, destroy [[Jokers|Joker]] to the right and permanently add {{hl|orange|double}} its sell value to this {{hl|red|Mult}} <br> {{currently|{{mult|+0}}}} Uncommon Additive Mult Independent Ceremonial Dagger.png) will scale very fast thanks to Jokers' inflated sell prices.- Jokers that create cards such as
Cartomancer (Create a [[Tarot Cards|{{hl|purple|Tarot}}]] card when [[Blinds|{{hl|orange|Blind}}]] is selected <br> {{room}} Discover every Tarot Card. Uncommon Effect On Blind Select Cartomancer.png), 
Vagabond (Create a [[Tarot Cards|{{hl|purple|Tarot}}]] card if hand is played with {{Money|4}} or less Rare Effect Independent Vagabond.png), 
8 Ball ({{hl|green|1 in 4}} chance for each played {{hl|orange|8}} to create a [[Tarot Cards|{{hl|purple|Tarot}}]] card when scored<br>{{room}} Common Effect On Scored 8_Ball.png), and 
Certificate (When round begins, add a random {{hl|orange|playing card}} with a random [[Seal|{{hl|orange|seal}}]] to your hand Have a [[Gold_Cards|Gold playing card]] with a [[Gold_Seal|{{hl|orange|Gold Seal}}]] Uncommon Effect N/A (Passive) Certificate.png) (
Purple Seals (Creates a {{Tarot|}} card when {{hl|orange|discarded}}<br>{{room}} Purple Seal.png) and 
Blue Seals (Creates the {{Planet|}} card for final played [[Poker Hands|{{hl|orange|poker hand}}]] of round if {{hl|orange|held}} in hand<br>{{room}} Blue Seal.png)) can help provide sources of tarots or planets that don't increase shop prices.
Uncommon Tag ( Uncommon tag.png), 
Rare Tag ( Discover {{J|Blueprint}} Rare tag.png), 
Negative Tag ( Discover the {{edition|Negative}} edition Negative tag.png), 
Foil Tag ( Discover the {{edition|Foil}} edition Foil tag.png), 
Holographic Tag ( Discover the {{edition|Holographic}} edition Holographic tag.png), and 
Polychrome Tag ( Discover the {{edition|Polychrome}} edition Polychrome tag.png) can be valuable to pick up a guaranteed free Joker with editions if players are low on money and desperately need something to fill up their Joker slot.- The
Coupon Tag ( Coupon tag.png) is very powerful in the late game, allowing players to have a free shop to pick up and sell stuff for a quick econ recovery.
Anti-Synergies
- While not useless during this challenge, do note that free planet cards provided by
Astronomer (All {{hl|cyan|Planet}} cards and {{hl|cyan|Celestial Packs}} in the shop are {{hl|orange|free}} Discover every {{Planet|}} card Uncommon Effect N/A (Passive) Astronomer.png) do increase prices in the shop even though they are free, meaning that it becomes somewhat less helpful.
- Jokers that require a high amount of purchases to function, like
Fortune Teller ({{mult|+1}} per [[Tarot Cards|{{hl|purple|Tarot}}]] card used this run <br> {{currently|{{hl|red|+0}}}} Common Additive Mult Independent Fortune Teller.png), 
Campfire (This Joker gains {{xmult|0.25}} for each card {{hl|orange|sold}}, resets when [[Blinds|{{hl|orange|Boss Blind}}]] is defeated <br> {{currently|{{xmult|1}}}} Rare Multiplicative Mult Independent Campfire.png), and 
Constellation (This Joker gains {{xmult|0.1}} every time a [[Planet_Cards|{{hl|cyan|Planet}}]] card is used <br> {{currently|{{xmult|1}}}} Uncommon Multiplicative Mult Independent Constellation.png), are considerably harder to make work.
Trivia
- The name of this deck references the economic concept of inflation, an increase in the price of goods and services.
In other languages
| Language | Name |
|---|
| Chinese (Simplified) | 通货膨胀 |
| Chinese (Traditional) | 通貨膨脹 |
| Dutch | Inflatie |
| French | Inflation |
| German | Inflation |
| Indonesian | Inflasi |
| Italian | Inflazione |
| Japanese | インフレ |
| Korean | 인플레이션 |
| Polish | Inflacja |
| Portuguese (Brazilian) | Inflação |
| Russian | Инфляция |
| Spanish (Spain) | Inflación |
| Spanish (Latin America) | Inflación |
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| Standard Decks |
 Red Deck ( {{hl|red|+1}} discard every round Unlocked from start Red Deck.png) Blue Deck ( {{hl|blue|+1}} hand every round Discover at least {{hl|orange|20}} items from your [[collection]] Blue Deck.png) Yellow Deck ( Start with extra {{Money|10}} Discover at least {{hl|orange|50}} items from your [[Collection|collection]] Yellow Deck.png) Green Deck ( At end of each Round: <br> {{Money|2}} per remaining {{hl|blue|Hand}} <br> {{Money|1}} per remaining {{hl|red|Discard}} <br> Earn no {{hl|orange|Interest}} Discover at least {{hl|orange|75}} items from your [[collection]] Green Deck.png) Black Deck ( {{hl|orange|+1}} Joker slot <br> {{hl|blue|-1}} hand every round Discover at least {{hl|orange|100}} items from your [[collection]] Black Deck.png) Magic Deck ( Start run with the {{V|Crystal Ball|class=hl-purple}} voucher and {{hl|orange|2}} copies of {{tarot|The Fool}} Win a run with the {{D|Red}} on [[Stakes|any difficulty]] Magic Deck.png) Nebula Deck ( Start run with the {{V|Telescope|class=hl-cyan}} voucher <br> {{hl|red|-1}} consumable slot Win a run with the {{D|Blue}} on [[Stakes|any difficulty]] Nebula Deck.png) Ghost Deck ( [[Spectral Cards|{{hl|sblue|Spectral}}]] cards may appear in the shop, start with a {{spectral|Hex}} card Win a run with the {{D|Yellow}} on [[Stakes|any difficulty]] Ghost Deck.png) Abandoned Deck ( Start run with no {{F|}}[[Card Ranks#Face cards|{{hl|orange|Face Cards}}]] in your deck Win a run with the {{D|Green}} on [[Stakes|any difficulty]] Abandoned Deck.png) Checkered Deck ( Start run with {{hl|orange|26}} {{suit|Spades}} and {{hl|orange|26}} {{suit|Hearts}} in deck Win a run with the {{D|Black}} on any difficulty Checkered Deck.png) Zodiac Deck ( Start run with {{V|Tarot Merchant|class=hl-purple}}, {{V|Planet Merchant|class=hl-cyan}}, and {{V|Overstock|class=hl-orange}} Win a run with any [[Decks|deck]] on the {{Stake|Red}} difficulty or harder Zodiac Deck.png) Painted Deck ( {{hl|orange|+2}} hand size, <br> {{hl|red|-1}} Joker slot Win a run with any [[Decks|deck]] on the {{Stake|Green}} difficulty or harder Painted Deck.png) Anaglyph Deck ( After defeating each [[Blinds|{{hl|orange|Boss Blind}}]], gain a [[File:Double tag.png|24px]] [[Tags|{{hl|orange|Double Tag}}]] Win a run with any [[Decks|deck]] on the {{Stake|Black}} difficulty or harder Anaglyph Deck.png) Plasma Deck ( Balance [[Chips|{{hl|blue|Chips}}]] and [[Mult|{{hl|red|Mult}}]] when calculating score for played hand <br> {{hl|red|X2}} base Blind size Win a run with any [[Decks|deck]] on the {{Stake|Blue}} difficulty or harder Plasma Deck.png) Erratic Deck ( All [[Card Ranks|{{hl|orange|Ranks}}]] and [[Suits|{{hl|orange|Suits}}]] in deck are randomized Win a run with any [[Decks|deck]] on the {{Stake|Orange}} difficulty or harder Erratic Deck.png)
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| Challenge Decks |
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