Slay the Spire Relic Synergy Calculator

About This Tool

This automated calculator helps Slay the Spire players discover powerful relic combinations across all four characters. Unlike static tier lists, this tool evaluates how your specific relics interact with each other to generate a dynamic synergy score.

How It Works

• Synergy Scoring: Relics share hidden "Strategy Tags" (e.g., Strength Scaling, Block Generation, Zero-Cost Cards). When you select multiple relics with matching or complementary tags, your score increases.
• Hard-Coded Combos: The calculator recognizes famous interactions like Kunai + Shuriken or Tungsten Rod + Torii and awards bonus points.
• Anti-Synergy Warnings: If you pick conflicting relics (like Sozu + Potion Belt), the tool will flag the negative interaction.

Tips for Better Runs

Focus on building a cohesive engine rather than just picking "good" relics. A deck that generates massive Block (Calipers + Barricade style) wants different relics than a glass-cannon Strength deck.