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 8 recorded runs, decks running it win 37.5% of the time, comfortably clear of the 12.6% average, by 24.9%. It’s a more selective pick, turning up in just 1.5% of decks that could run it. Silent players keep it in 7.7% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.3 times in the decks that take it.

It performs best next to Haze — together they post a +29.2% swing in win rate. It also has strong chemistry with the relic Silver Crucible, which moves its win rate by +29.2%. At 3 energy, it’s upgraded in 30.0% of runs and usually joins the deck around floor 19.

Upgraded, it gains +1 Cards, which is why so many decks invest a rest-site upgrade in it. That’s 3 wins, 5 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Knowledge Demon Boss, which closes out 25.0% 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 Haze (+29.2%), Afterimage (+29.2%), and Untouchable (+12.5%).

Haze+29.2%3 runsAfterimage+29.2%3 runsUntouchable+12.5%4 runsNeutralize+5.4%7 runsDefend0.0%8 runsPrepared0.0%8 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 37.5% win rate across 8 runs.

The Silentappears in 7.7% of its runs (8 tracked)

Best Relics for Reflex

Reflex pairs best with the relics Silver Crucible (+29.2%), Bronze Scales (+29.2%), and Festive Popper (+12.5%), ranked by win-rate lift.

Silver Crucible+29.2%3 runsBronze Scales+29.2%3 runsFestive Popper+12.5%4 runsRed Mask-4.2%3 runsSparkling Rouge-4.2%3 runsWhetstone-4.2%3 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 30.0% of runs and usually picked up by floor 19.

Draw cards.

Upgrade: +1 Cards

What Ends Runs with Reflex

Reflex’s most common run-enders are Knowledge Demon Boss (25.0%).

• Knowledge Demon Boss25.0% of runs

See Also

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