Dark Shackles•Skill

Is Dark Shackles good in Slay the Spire 2?

In Slay the Spire 2, Dark Shackles is an uncommon skill from the Colorless card pool. Its effect: Enemy loses Strength this turn. Right now it’s a premium pick that sits at S tier — one of the better cards you can add to a deck this run.

Over 55 tracked runs its win rate sits at 43.5%, 24.5% ahead of the 18.9% all-deck baseline. It sees niche play, included in only 1.4% of eligible runs. Within Regent runs it’s drafted 0.6% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.1 copies on average.

Its standout pairing so far is Regret, which lifts its win rate by +13.0% when the two share a deck. On the relic side, Oddly Smooth Stone is its standout companion, worth a +23.3% win-rate swing alongside it. It costs 0 energy, gets upgraded 20.3% of the time, and tends to be picked up near floor 18.

Of the runs that drafted it, 20 ended in victory against 26 deaths and 9 abandons. Its most common run-ender is Knowledge Demon Boss, finishing 7.3% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Dark Shackles fits a Colorless deck.

Best Cards to Pair with Dark Shackles

Dark Shackles’s strongest card pairings so far are Regret (+13.0%), Reanimate (+13.0%), and Cruelty (+13.0%), each shown with the win-rate lift it adds.

Regret+13.0%3 runsReanimate+13.0%3 runsCruelty+13.0%3 runsDrain Power+13.0%4 runsDebilitate+13.0%4 runsKnow Thy Place+13.0%3 runs

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

Dark Shackles Win Rate by Class

Of the 5 classes that draft Dark Shackles, it performs best with Regent (100.0%), Necrobinder (54.5%), and Ironclad (46.1%).

The Regent100.0%4 runsThe Necrobinder54.5%16 runsThe Ironclad46.1%13 runsThe Silent33.3%14 runsThe Defect25.0%8 runs

Best Relics for Dark Shackles

The relics that swing Dark Shackles’s win rate the most are Oddly Smooth Stone (+23.3%), Happy Flower (+20.1%), and Ripple Basin (+18.8%), with each lift shown.

Oddly Smooth Stone+23.3%8 runsHappy Flower+20.1%11 runsRipple Basin+18.8%5 runsBlood Vial+16.3%14 runsRed Mask+16.3%10 runsCloak Clasp+16.1%4 runs

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

Dark Shackles Card Details

A 0-energy uncommon skill, Dark Shackles is upgraded 20.3% of the time and tends to enter the deck around floor 18.

Enemy loses Strength this turn.

What Ends Runs with Dark Shackles

Runs holding Dark Shackles end most often against Knowledge Demon Boss (7.3%), Queen Boss (7.3%), and Decimillipede Elite (3.6%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss7.3% of runs
• Queen Boss7.3% of runs
• Decimillipede Elite3.6% of runs
• Kaiser Crab Boss3.6% of runs

See Also

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