Reflex•Skill

Is Reflex good in Slay the Spire 2?

Reflex is an uncommon Silent skill in Slay the Spire 2. In combat it resolves as: Draw cards. It ranks among the strongest cards its class can draft right now, earning a spot at S tier in our Slay the Spire 2 card tier list.

Across 91 recorded runs, decks running it win 46.0% of the time, comfortably clear of the 19.0% average, by 27.0%. It’s a more selective pick, turning up in just 2.4% of decks that could run it. Silent players keep it in 9.3% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.1 times in the decks that take it.

It performs best next to Up My Sleeve — together they post a +26.2% swing in win rate. It also has strong chemistry with the relic Orichalcum, which moves its win rate by +24.0%. At 3 energy, it’s upgraded in 26.7% of runs and usually joins the deck around floor 15.

Upgraded, it gains +1 Cards, which is why so many decks invest a rest-site upgrade in it. That’s 34 wins, 40 deaths, and 17 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Knowledge Demon Boss, which closes out 5.5% of its appearances. Read on for Reflex’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Silent run.

Best Cards to Pair with Reflex

Ranked by win-rate lift, Reflex performs best alongside Up My Sleeve (+26.2%), Backflip (+21.5%), and Adrenaline (+20.4%).

Up My Sleeve+26.2%15 runsBackflip+21.5%33 runsAdrenaline+20.4%16 runsFan of Knives+20.3%6 runsOutbreak+18.0%5 runsAfterimage+17.9%16 runs

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

Reflex Win Rate by Class

Reflex is drafted only by the Silent, where it holds a 46.0% win rate across 91 runs.

The Silentappears in 9.3% of its runs (91 tracked)

Best Relics for Reflex

Reflex pairs best with the relics Orichalcum (+24.0%), Lantern (+22.9%), and Tuning Fork (+22.3%), ranked by win-rate lift.

Orichalcum+24.0%8 runsLantern+22.9%18 runsTuning Fork+22.3%8 runsLetter Opener+20.4%12 runsGorget+20.4%14 runsStone Cracker+20.3%7 runs

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

Reflex Card Details

Reflex is an uncommon skill costing 3 energy; it’s upgraded in 26.7% of runs and usually picked up by floor 15.

Draw cards.

Upgrade: +1 Cards

What Ends Runs with Reflex

Reflex’s most common run-enders are Knowledge Demon Boss (5.5%), Entomancer Elite (5.5%), and Vantom Boss (2.2%).

• Knowledge Demon Boss5.5% of runs
• Entomancer Elite5.5% of runs
• Vantom Boss2.2% of runs
• Lagavulin Matriarch Boss2.2% of runs
• Bygone Effigy Elite2.2% of runs

See Also

Compare Reflex with the rest of the best Slay the Spire 2 cards, relics, and classes below.