STS2 Combo Damage Calculator
Build Slay the Spire 2 card combos, target a monster, and estimate damage, poison, block, energy usage, remaining HP, and lethal.
Inputs
Pick a monster, set HP and turn modifiers, then build your combo.
Card Picker
Showing the first 5 matching cards. Tap or click a card to add it.
Selected Combo
Tap or click a selected card to remove it. Upgrade toggle stays inside.
Inputs
Pick a monster, set HP and turn modifiers, then build your combo.
Card Picker
Showing the first 5 matching cards. Tap or click a card to add it.
Selected Combo
Tap or click a selected card to remove it. Upgrade toggle stays inside.
Damage Summary
Breakdown
STS2 Combo Damage Calculator FAQ
Quick answers about how this Slay the Spire 2 combo calculator works.
What does this STS2 combo damage calculator do?
This page lets you build a Slay the Spire 2 card combo, choose a monster target, and estimate immediate damage, poison damage, total block, combo cost, and lethal checks.
Can I add multiple cards to my STS2 combo?
Yes. You can add multiple cards to your combo and mix upgraded and non-upgraded versions to estimate combined output.
Does the calculator support Strength, Weak, and Vulnerable?
Yes. The calculator includes quick combat modifiers like Strength, Weak, and Vulnerable to give a stronger estimate than raw card damage alone.
Why are some monsters missing from the dropdown?
The calculator filters out junk entries such as internal strings, placeholder names, no-HP records, and malformed monster rows so only usable monsters appear.