Capacitor•Power

Is Capacitor good in Slay the Spire 2?

Capacitor is an uncommon Defect power in Slay the Spire 2. In combat it resolves as: Gain Orb Slots. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.

Across 158 recorded runs, decks running it win 26.2% of the time, comfortably clear of the 18.9% average, by 7.3%. It’s a more selective pick, turning up in just 4.2% of decks that could run it. Defect players keep it in 27.1% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.2 times in the decks that take it.

It performs best next to Overclock — together they post a +24.2% swing in win rate. It also has strong chemistry with the relic Membership Card, which moves its win rate by +24.5%. At 1 energy, it’s upgraded in 30.1% of runs and usually joins the deck around floor 16.

Upgraded, it gains +1 Repeat, which is why so many decks invest a rest-site upgrade in it. That’s 37 wins, 104 deaths, and 17 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Queen Boss, which closes out 10.1% of its appearances. Read on for Capacitor’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Defect run.

Best Cards to Pair with Capacitor

Ranked by win-rate lift, Capacitor performs best alongside Overclock (+24.2%), Fasten (+21.7%), and Prolong (+21.7%).

Overclock+24.2%19 runsFasten+21.7%9 runsProlong+21.7%8 runsMachine Learning+19.9%16 runsFeral+18.9%21 runsDefragment+18.9%19 runs

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

Capacitor Win Rate by Class

Capacitor is drafted only by the Defect, where it holds a 26.2% win rate across 158 runs.

The Defectappears in 27.1% of its runs (158 tracked)

Best Relics for Capacitor

Capacitor pairs best with the relics Membership Card (+24.5%), Joss Paper (+24.4%), and Blood Vial (+22.9%), ranked by win-rate lift.

Membership Card+24.5%7 runsJoss Paper+24.4%9 runsBlood Vial+22.9%33 runsRainbow Ring+21.4%8 runsKunai+21.4%6 runsMeal Ticket+21.1%24 runs

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

Capacitor Card Details

Capacitor is an uncommon power costing 1 energy; it’s upgraded in 30.1% of runs and usually picked up by floor 16.

Gain Orb Slots.

Upgrade: +1 Repeat

What Ends Runs with Capacitor

Capacitor’s most common run-enders are Queen Boss (10.1%), Phantasmal Gardeners Elite (4.4%), and Kaiser Crab Boss (4.4%).

• Queen Boss10.1% of runs
• Phantasmal Gardeners Elite4.4% of runs
• Kaiser Crab Boss4.4% of runs
• Decimillipede Elite3.8% of runs
• Knowledge Demon Boss3.2% of runs

See Also

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