Overview
| Field | Value |
|---|---|
| Name (EN) | Glass Joker |
| Name (JP) | グラスジョーカー |
| Rarity | Uncommon |
| Cost | $6 |
| Effect | Gains +x0.75 Mult whenever a Glass card is destroyed (permanent, starts at x1 Mult) |
| Unlock | Obtain 5 Glass cards |
| Trigger Type | On score |
| Overall Tier | S |
Rating & Analysis
Glass Joker turns the random destruction downside of Glass cards into permanent xMult growth. Glass cards give x2 Mult per scoring but break 1/4 of the time on use; each break adds +x0.75 Mult to Glass Joker forever. By Ante 8 you'll routinely sit at x4–x8 Mult, and with Blueprint / Brainstorm copying it the effective ceiling reaches x16+.
The optimal play is a "mass-produce Glass → random break = growth" loop. Justice Tarot enhances cards into Glass, and combining it with Ghost Deck (high Spectral rate) or Fragile Challenge Deck (Glass-heavy starting deck) maximizes growth opportunities. Showman lifts duplicate restrictions, letting you stack multiple copies of the same key rank as Glass.
Blueprint to its right doubles +x0.75 → effectively +x1.5 per break. Tier lists rank Glass Joker at S in any Glass-axis build. The $6 cost is very cheap; top-priority pickup.
Good Joker Synergies
| Joker | Why |
|---|---|
| Blueprint / Brainstorm | Doubles xMult — Glass Joker's ceiling rises sharply. |
| Vampire | +Mult on Enhanced card scoring — parallel to Glass cards. |
| Ceremonial Dagger | Adjacent-Joker destruction +Mult — self-harm synergy. |
| Madness | Parallel self-harm scaling — stack two xMult sources. |
| Fortune Teller | +Mult × xMult multiplicative damage compound. |
| Cartomancer | Tarot axis ensures Justice supply for Glass production. |
Recommended Builds
| Build | Core Loop | Target Consumables |
|---|---|---|
| Glass mass production | Justice Tarot creates Glass → break drives growth | Justice Tarot |
| Fragile Challenge | Glass-heavy start, Blueprint doubles | Enhancement Tarots |
| Vampire + Glass Joker | Enhanced-card scoring + Glass breaking parallel scaling | Enhancement Tarots |
| Perkeo + Glass loop | Perkeo Negative-copies Justice → infinite Glass production | Black Hole / The Soul |
Tips & Usage
- Use Justice Tarot to Glass-enhance core cards (Aces, face cards).
- Pick up Showman to allow multiple Glass copies of the same key rank.
- Place Blueprint to its right to double xMult — exponential mid-game ceiling.
- Glass card destruction is random (1/4) — don't over-think probability, just use them.
- Perkeo Negative-copies Justice Tarots for permanent Glass-card supply.
Caveats
- Without Glass cards in deck, no growth — Glass-generation tools are mandatory.
- Random destruction can wipe key Glass cards in succession — variance risk.
- Perishable Glass Joker is risky — growth stalls on expiry.
- High Stakes need Blueprint stacking; without it, mid-Ante ceiling stalls.
- Glass card x2 Mult vanishes on break — balance short-term damage and long-term growth.