What is Membership Card?
Discounts shop prices and improves long-run gold efficiency.
This reference covers gameplay decisions in the original Slay the Spire. Character-specific options and relic synergy can change how useful an item is, so consider your current deck, health, upcoming enemy and available resources before applying a strategy.
When and how to use it
Buy early when many shops remain and valuable purchases are expected.
What to avoid
Buying it near the end may never recover its opportunity cost.