Upgrading cards
Slay the SpireA campfire upgrade
- Smith opens the choice of a card to upgrade
- The alternative uses the same rest stop
An individual card gains power or a new property. Upgrading changes its role in the deck and competes with other uses of progression resources.
Design tips
- Let players compare the card before and after upgrading.
- Evaluate the upgrade in different decks as well as on its own.
