What is Echo Form?
Duplicates the first card played each turn, enabling extreme value over long battles.
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
Time the expensive setup when you can survive and choose the first card carefully.
What to avoid
Mis-sequencing a trivial card as the first play wastes its impact.