Slay the Spire 2 Best Deck Builds
Top performing deck archetypes per character, ranked by survival rate from 10,000+ simulated runs.
Data generated: 4/9/2026
Strength / Vulnerable
Vulnerable / Exhaust
Exhaust / Vulnerable
Top Sim Cards — Ironclad
Cards the sim picks most often when offered. Higher pick rate = stronger in more deck contexts.
Best Builds FAQ
How these deck builds are discovered and ranked.
How are these deck builds ranked?
Each build is discovered by running 10,000+ simulated runs per character. The simulator uses the same scoring logic as the Reward Card Helper, plus combat estimation against real monster data. Builds are ranked by survival rate — the percentage of simulated runs that cleared all three acts.
What are core cards vs flex cards?
Core cards appear in 80%+ of decks within that archetype — they define the build. Flex cards appear in 40-80% of those decks — they're strong additions but not mandatory. You can swap flex cards based on what's offered in your run.
Can I load a build into the Deck Builder?
Not yet, but the Deck Builder supports the same sim data. You can manually add the core cards to see how the build scores for each act.
How often is this data updated?
The simulation is re-run periodically as card data and scoring logic improve. The date at the top of the page shows when the current data was generated.