In Slay the Spire 2, certain cards can completely reshape how a run plays out. One of the most powerful examples is the Hidden Gem colorless skill.

Slay the Spire 2

Slay the Spire 2

Release Date: March 05, 2026

Genres: Strategy, Indie, Card & Board Game

More Info

Because it’s a colorless card and not always easy to find, many players wonder how to reliably obtain it. Here’s everything you need to know about Hidden Gem in Slay the Spire 2.

TL;DR — Hidden Gem Guide
  • Card Type: Colorless Skill
  • Energy Cost: 1
  • Effect: Grants Replay to a random card in your draw pile
  • Upgrade: Increases the number of Replay stacks
  • Best way to obtain: Merchant shop

Hidden Gem Card Details

CardType / CostEffect
Hidden GemSkill – 1 EnergyA random card in your Draw Pile gains Replay 2
Hidden Gem+Skill – 1 EnergyA random card in your Draw Pile gains Replay 3

Since Hidden Gem is a colorless card, it can be used by all five playable characters in Slay the Spire 2.

How to Get Hidden Gem in Slay the Spire 2

1. Merchant Shops (Most Reliable Method)

The easiest and most reliable way to obtain Hidden Gem is through the Merchant.

On the map, merchants are marked by a bag-of-gold icon. Their shop inventory typically includes:

  • 5 character-specific cards
  • 3 relics
  • 3 potions
  • 2 colorless cards

Hidden Gem can appear among those colorless card options. Visiting multiple merchants during a run increases the chances of finding it.

2. Unknown Events

Another potential source is Unknown rooms, marked with a question mark (?) on the map.

Some events allow players to:

  • Choose between several colorless cards
  • Receive a random colorless card as a reward

Hidden Gem can sometimes appear among these options.

3. Relics That Generate Colorless Cards

Some relics increase your chances of acquiring Hidden Gem by generating or offering colorless cards.

RelicEffect
Dingy RugCard rewards can include colorless cards
ToolboxStart combat by choosing 1 of 3 random colorless cards
Orange DoughStart combat with 2 random colorless cards

4. Cards That Generate Colorless Cards

Some abilities can generate colorless cards during combat. The Regent character in particular has several options that can create them.

CardType / CostEffect
QuasarSkill – 0 (2)Choose 1 of 3 random colorless cards to add to your hand
Manifest AuthoritySkill – 1Gain 7 Block and add a random colorless card to your hand
Spectrum ShiftPower – 2At the start of your turn add a random colorless card
Bundle of JoySkill – 2Add 3 random colorless cards to your hand. Exhaust

Final Thoughts

Hidden Gem can completely transform a run when used correctly. While the most reliable way to find the card is through the Merchant, players can also encounter it through events, relic effects, or colorless card generators.

If Hidden Gem appears in the shop during your run, it’s often worth picking up — it may become the centerpiece of your entire build.