The player must redeem Blank ({{hl|gray|Does nothing?}} Base Blank.png) 10 times in total during unseeded, non-challenge runs to unlock Antimatter.
Like all other tier 2 vouchers, the tier 1 voucher ( Blank ({{hl|gray|Does nothing?}} Base Blank.png)) must be purchased in the same run for Antimatter to appear.
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) and Blast Off ( ): Antimatter can make up for losing the Joker slot.
Antimatter benefits almost all Jokers due to the extra Joker slot, but some specific Jokers (like Abstract Joker ({{Mult|+3}} for each [[Jokers|{{hl|orange|Joker}}]] card<br>{{Currently|{{mult|+0}}}} Common Additive Mult Independent Abstract Joker.png), 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) 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)) benefit more.
Trivia
The Voucher's appearance without the Negative effect.
The Antimatter Voucher is always displayed in game as if it was a negative edition, and has a similar effect to having a Negative ({{hl|edition|+1}} Joker or Consumable slot Joker (Negative).png) Joker.
The only exception to this is when the player purchases Blank ({{hl|gray|Does nothing?}} Base Blank.png) for the 10th time. The Voucher Unlocked message will display the Voucher without the Negative effect applied.
Overstock ({{hl|orange|+1}} card slot available in shop Base Overstock.png)
Clearance Sale (All cards and packs in shop are {{hl|orange|25%}} off Base Clearance Sale.png)
Hone ({{hl|edition|Foil}}, {{hl|edition|Holographic}}, and {{hl|edition|Polychrome}} cards appear {{hl|orange|2X}} more often Base Hone.png)
Reroll Surplus (Rerolls cost {{Money|2}} less Base Reroll Surplus.png)
Crystal Ball ({{hl|orange|+1}} consumable slot Base Crystal Ball.png)
Telescope ([[Booster Packs|{{hl|orange|Celestial Packs}}]] always contain the [[Planet Cards|{{hl|cyan|Planet}}]] card for your most played [[Poker Hands|{{hl|orange|poker hand}}]] Base Telescope.png)
Grabber (Permanently gain {{hl|blue|+1}} hand per round Base Grabber.png)
Wasteful (Permanently gain {{hl|red|+1}} discard each round Base Wasteful.png)
Tarot Merchant ({{Tarot|}} cards appear {{hl|orange|2X}} more frequently in the shop Base Tarot Merchant.png)
Planet Merchant ({{Planet|}} cards appear {{hl|orange|2X}} more frequently in the shop Base Planet Merchant.png)
Seed Money (Raise the cap on interest earned in each round to {{Money|10}} Base Seed Money.png)
Magic Trick ({{hl|orange|Playing cards}} can be purchased from the [[The Shop|{{hl|orange|shop}}]] Base Magic Trick.png)
Hieroglyph ({{hl|orange|-1}} Ante, <br> {{hl|blue|-1}} hand each round Base Hieroglyph.png)
Director's Cut (Reroll [[Blinds|Boss Blind]] {{hl|orange|1}} time per Ante, {{Money|10}} per roll Base Director's Cut.png)
Paint Brush ({{hl|orange|+1}} hand size Base Paint Brush.png)
Upgraded vouchers
Overstock Plus ({{hl|orange|+1}} card slot available in shop Spend a total of {{Money|2500}} at the shop Upgraded Overstock Plus.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)
Glow Up ({{hl|edition|Foil}}, {{hl|edition|Holographic}}, and {{hl|edition|Polychrome}} cards appear {{hl|orange|4X}} more often Have at least 5 Joker cards with Foil, Holographic, or Polychrome (or Negative) effect Upgraded Glow Up.png)
Reroll Glut (Rerolls cost an additional {{Money|2}} less Reroll the shop a total of 100 times Upgraded Reroll Glut.png)
Omen Globe ({{Spectral|}} cards may appear in any of the [[Arcana Packs|{{hl|orange|Arcana Packs}}]] Use a total of 25 Tarot cards from booster packs Upgraded Omen Globe.png)
Observatory ([[Planet Cards|{{hl|cyan|Planet}}]] cards in your [[Consumables|{{hl|orange|consumable}}]] area give {{xmult|1.5}} for their specified [[Poker Hands|{{hl|orange|poker hand}}]] Use a total of {{hl|orange|25}} [[Planet|{{hl|cyan|Planet}}]] cards from any {{hl|cyan|Celestial Pack}} Upgraded Observatory.png)
Nacho Tong (Permanently gain an additional {{hl|blue|+1}} hand per round Play a total of 2,500 cards Upgraded Nacho Tong.png)
Recyclomancy (Permanently gain an additional {{hl|red|+1}} discard each round Discard a total of 2500 cards Upgraded Recyclomancy.png)
Tarot Tycoon ({{Tarot|}} cards appear {{hl|orange|4X}} more frequently in the shop Buy a total of 50 Tarot cards from the shop Upgraded Tarot Tycoon.png)
Planet Tycoon ([[Planet Cards|{{hl|cyan|Planet}}]] cards appear {{hl|orange|4X}} more frequently in the shop Buy a total of 50 Planet cards from the shop Upgraded Planet Tycoon.png)
Money Tree (Raise the cap on interest earned in each round to {{Money|20}} Max out the interest per round earnings for ten consecutive rounds Upgraded Money Tree.png)
Illusion ({{hl|orange|Playing cards}} in shop may have an [[Card Modifiers#Enhancements|{{hl|sblue|Enhancement}}]], [[Card Modifiers#Edition|{{hl|edition|Edition}}]], and/or a [[Card Modifiers#Seal|{{hl|orange|Seal}}]] Buy a total of 20 Playing cards from the shop Upgraded Illusion.png)
Petroglyph ({{hl|orange|-1}} Ante, <br> {{hl|red|-1}} discard each round Reach Ante 12 Upgraded Petroglyph.png)
Retcon (Reroll [[Blinds|Boss Blind]] {{hl|orange|unlimited}} times, {{Money|10}} per roll Discover 25 Blinds Upgraded Retcon.png)
Palette ({{hl|orange|+1}} hand size Reduce your hand size down to five cards. Upgraded Palette.png)
Blank 10 times in total during unseeded, non-challenge runs to unlock Antimatter.
Jokerless challenge bans Antimatter.
Painted Deck and 
Abstract Joker, 
Swashbuckler and 
Gift Card) benefit more.
.png)
Negative Joker.
