Stone Armor•Power

Is Stone Armor good in Slay the Spire 2?

In Slay the Spire 2, Stone Armor is an uncommon power from the Ironclad card pool. Its effect: Gain 4 Plating. Right now it’s a premium pick that sits at B tier — one of the better cards you can add to a deck this run.

Over 112 tracked runs its win rate sits at 36.0%, 17.1% ahead of the 18.9% all-deck baseline. It sees niche play, included in only 3.0% of eligible runs. Within Ironclad runs it’s drafted 15.7% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.2 copies on average.

Its standout pairing so far is Ashen Strike, which lifts its win rate by +22.4% when the two share a deck. On the relic side, Venerable Tea Set is its standout companion, worth a +23.3% win-rate swing alongside it. It costs 1 energy, gets upgraded 37.4% of the time, and tends to be picked up near floor 17.

Of the runs that drafted it, 36 ended in victory against 64 deaths and 12 abandons. Its most common run-ender is Knowledge Demon Boss, finishing 7.1% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Stone Armor fits a Ironclad deck.

Best Cards to Pair with Stone Armor

Stone Armor’s strongest card pairings so far are Ashen Strike (+22.4%), Pyre (+18.4%), and Juggling (+18.1%), each shown with the win-rate lift it adds.

Ashen Strike+22.4%15 runsPyre+18.4%15 runsJuggling+18.1%17 runsFisticuffs+14.8%3 runsEternal Armor+14.8%3 runsThinking Ahead+14.8%3 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Stone Armor Win Rate by Class

Of the 2 classes that draft Stone Armor, it performs best with Ironclad (36.4%) and Necrobinder (0.0%).

The Ironclad36.4%111 runsThe Necrobinder0.0%1 runs

Best Relics for Stone Armor

The relics that swing Stone Armor’s win rate the most are Venerable Tea Set (+23.3%), Red Skull (+22.0%), and The Chosen Cheese (+21.3%), with each lift shown.

Venerable Tea Set+23.3%18 runsRed Skull+22.0%10 runsThe Chosen Cheese+21.3%13 runsTuning Fork+20.5%8 runsBag of Marbles+19.7%18 runsEternal Feather+19.2%12 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Stone Armor Card Details

A 1-energy uncommon power, Stone Armor is upgraded 37.4% of the time and tends to enter the deck around floor 17.

Gain 4 Plating.

What Ends Runs with Stone Armor

Runs holding Stone Armor end most often against Knowledge Demon Boss (7.1%), Decimillipede Elite (7.1%), and Test Subject Boss (5.4%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss7.1% of runs
• Decimillipede Elite7.1% of runs
• Test Subject Boss5.4% of runs
• Kaiser Crab Boss4.5% of runs
• Queen Boss3.6% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.