Voltaic•Skill

Is Voltaic good in Slay the Spire 2?

Voltaic is a rare Defect skill in Slay the Spire 2. In combat it resolves as: Channel Lightning equal to the Lightning already Channeled this combat. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.

Across 52 recorded runs, decks running it win 25.0% of the time, comfortably clear of the 18.9% average, by 6.0%. It’s a more selective pick, turning up in just 1.4% of decks that could run it. Defect players keep it in 8.9% 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 White Noise — together they post a +17.5% swing in win rate. It also has strong chemistry with the relic Sword of Jade, which moves its win rate by +21.4%. At 3 energy, it’s upgraded in 36.8% of runs and usually joins the deck around floor 16.

That’s 12 wins, 36 deaths, and 4 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Queen Boss, which closes out 9.6% of its appearances. Read on for Voltaic’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Defect run.

Best Cards to Pair with Voltaic

Ranked by win-rate lift, Voltaic performs best alongside White Noise (+17.5%), All for One (+17.3%), and TURBO (+15.6%).

White Noise+17.5%11 runsAll for One+17.3%3 runsTURBO+15.6%6 runsFTL+14.5%10 runsSquash+14.3%4 runsEnergy Surge+14.3%4 runs

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

Voltaic Win Rate by Class

Voltaic is drafted only by the Defect, where it holds a 25.0% win rate across 52 runs.

The Defectappears in 8.9% of its runs (52 tracked)

Best Relics for Voltaic

Voltaic pairs best with the relics Sword of Jade (+21.4%), Blood Vial (+19.1%), and Lantern (+18.3%), ranked by win-rate lift.

Sword of Jade+21.4%4 runsBlood Vial+19.1%8 runsLantern+18.3%5 runsRed Mask+17.5%10 runsPendulum+16.7%9 runsBronze Scales+16.7%9 runs

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

Voltaic Card Details

Voltaic is a rare skill costing 3 energy; it’s upgraded in 36.8% of runs and usually picked up by floor 16.

Channel Lightning equal to the Lightning already Channeled this combat.

What Ends Runs with Voltaic

Voltaic’s most common run-enders are Queen Boss (9.6%), Kaiser Crab Boss (5.8%), and The Kin Boss (5.8%).

• Queen Boss9.6% of runs
• Kaiser Crab Boss5.8% of runs
• The Kin Boss5.8% of runs
• Vantom Boss3.8% of runs
• Ceremonial Beast Boss3.8% of runs

See Also

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