Refract•Attack

Is Refract good in Slay the Spire 2?

In Slay the Spire 2, Refract is an uncommon attack from the Defect card pool. Its effect: Deal 9 damage twice. Channel Glass. The data flags it as a weaker pick, settling at F tier — usually one to pass on unless your deck specifically wants it.

Over 40 tracked runs its win rate sits at 14.3%, 4.7% short of the 18.9% all-deck baseline. It sees niche play, included in only 1.1% of eligible runs. Within Defect runs it’s drafted 6.8% 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 Ultimate Defend, which lifts its win rate by +17.4% when the two share a deck. On the relic side, War Paint is its standout companion, worth a +13.4% win-rate swing alongside it. It costs 3 energy, gets upgraded 27.3% of the time, and tends to be picked up near floor 14.

Upgrading the card adds +3 Damage to its stat line. Of the runs that drafted it, 5 ended in victory against 30 deaths and 5 abandons. Its most common run-ender is Kaiser Crab Boss, finishing 10.0% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Refract fits a Defect deck.

Best Cards to Pair with Refract

Refract’s strongest card pairings so far are Ultimate Defend (+17.4%), Modded (+13.4%), and Chill (+13.4%), each shown with the win-rate lift it adds.

Ultimate Defend+17.4%4 runsModded+13.4%7 runsChill+13.4%7 runsHologram+13.4%9 runsReboot+12.1%4 runsTURBO+12.1%3 runs

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

Refract Win Rate by Class

Exclusive to the Defect, Refract posts a 14.3% win rate over 40 tracked runs.

The Defectappears in 6.8% of its runs (40 tracked)

Best Relics for Refract

The relics that swing Refract’s win rate the most are War Paint (+13.4%), Vajra (+13.4%), and Regal Pillow (+13.4%), with each lift shown.

War Paint+13.4%8 runsVajra+13.4%8 runsRegal Pillow+13.4%8 runsUnceasing Top+12.1%3 runsPermafrost+12.1%3 runsRainbow Ring+12.1%3 runs

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

Refract Card Details

A 3-energy uncommon attack, Refract is upgraded 27.3% of the time and tends to enter the deck around floor 14.

Deal 9 damage twice. Channel Glass.

Upgrade: +3 Damage

What Ends Runs with Refract

Runs holding Refract end most often against Kaiser Crab Boss (10.0%), Vantom Boss (7.5%), and Lagavulin Matriarch Boss (5.0%) — the share of its runs each accounts for is shown.

• Kaiser Crab Boss10.0% of runs
• Vantom Boss7.5% of runs
• Lagavulin Matriarch Boss5.0% of runs
• Queen Boss5.0% of runs
• Mytes Normal5.0% of runs

See Also

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