What Quest Cards are
Quest Cards are a new card type in Slay the Spire 2. They cannot be played like a normal card — they clog your deck the way a Curse or Status card would — but each one carries a condition, and meeting it grants a reward.
The three in the current build, straight from the card data:
| Quest Card | What it does | Reward direction |
|---|---|---|
| Byrdonis Egg | Can be hatched at a Rest Site. | A bird companion joins you in combat. |
| Lantern Key | Unlocks a special event in the next Act. | Access to a special event. |
| Spoils Map | Marks a site of 600 extra Gold in the next Act. | 600 Gold at a marked site. |
How to think about them
They are a risk-reward decision, not a free upside. While uncompleted, a Quest Card is a dead draw that dilutes your deck, so you want to finish it quickly or avoid taking it when your deck is already tight.
The payoff is the trade: Byrdonis Egg becomes a permanent combat ally, Lantern Key opens content you would otherwise miss, and Spoils Map is a straight Gold spike. All three pay off in a later act, so they reward runs that can survive the wait.
Where to go next
Cards database lists every card in full, including the Quest type. Deckbuilding basics covers when to take a dead card for a future payoff.
Quest cards are investments
Quest cards look weak or unplayable now but pay off once a condition is met. Take them when your deck can survive the setup turns, because the completed quest often wins the run. A dead card today is a win condition tomorrow if you plan around it.