Runic Capacitor
Win Rate
29.4%
Pick Rate
0.6%
Δ vs Avg
+10.5

Runic CapacitorRelic

Shop
RarityShop
MethodologyData Methodology

Start each combat with additional Orb Slots.

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Is Runic Capacitor good in Slay the Spire 2?

Runic Capacitor is a shop relic in Slay the Spire 2. While carried, it does the following: Start each combat with additional Orb Slots. It currently underperforms most relics, sitting at D tier in our Slay the Spire 2 relic rankings.

Across 21 recorded runs, decks carrying it win 29.4% of the time, comfortably clear of the 18.9% average, by 10.5%. It’s a more situational relic, showing up in just 0.6% of runs. The class that gets the most out of it is the Defect, at a 29.4% win rate. Defect players hold onto it in 3.6% of their runs.

It combos especially well with Barrage, worth a +70.6% win-rate swing together. Another strong card to run with it is Ice Lance, worth +70.6% to its win rate. On average it’s acquired around floor 23 of a run. Its shop rarity shapes how frequently you’ll run into it.

It has 5 run wins against 12 losses in our tracked data. When runs carrying it end, the most frequent culprit is The Insatiable Boss, which closes out 9.5% of them. Read on for Runic Capacitor’s complete card, class, and threat breakdown before you decide to pick it up.

Runic Capacitor Win Rate & Pick Rate

Runic Capacitor’s 29.4% win rate clears the 18.9% all-run average by 10.5%, the gap charted below.

Win rate29.4%
Average run18.9%
+10.5% vs averagePick rate: 0.6%21 runs

Run Outcomes with Runic Capacitor

Runic Capacitor has 5 wins and 16 losses over 21 tracked runs (23.8% won); abandoned runs count as losses.

  • Wins 23.8%
  • Losses 76.2%

Best Cards with Runic Capacitor

Ranked by win-rate lift, the best cards to run with Runic Capacitor are Barrage (+70.6%), Ice Lance (+70.6%), and Modded (+37.3%).

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

Runic Capacitor Win Rate by Class

So far Runic Capacitor is carried mainly by the Defect, who win 29.4% of their runs with it across 21 tracked.

The DefectThe Defectappears in 3.6% of its runs (21 tracked)

Runic Capacitor Details

Runic Capacitor is a shop relic carried in 0.6% of runs and usually picked up around floor 23.

Start each combat with additional Orb Slots.

RarityShop
Typical pickup floor23
Pick rate0.6%
Runs tracked21

What Ends Runs with Runic Capacitor

Runic Capacitor’s most common run-enders are The Insatiable Boss (9.5%), Decimillipede Elite (9.5%), and Kaiser Crab Boss (9.5%).

  • The Insatiable Boss9.5% of runs
  • Decimillipede Elite9.5% of runs
  • Kaiser Crab Boss9.5% of runs
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Runic Capacitor – Frequently Asked Questions

Is Runic Capacitor good in Slay the Spire 2?

Across 21 tracked runs carrying it, Runic Capacitor wins 29.4% of the time — +10.5% above the average run. Win rate reflects how often runs with the relic end in victory.

What does Runic Capacitor do in Slay the Spire 2?

Start each combat with additional Orb Slots.

How rare is Runic Capacitor in Slay the Spire 2?

Runic Capacitor is a Shop relic, picked up in 0.6% of tracked runs.

What is the best card to use with Runic Capacitor?

In tracked runs, Runic Capacitor has performed best alongside Barrage, which lifts its win rate by +70.6% over 4 runs together.

See Also

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