ZapSkill
Channel 1 Lightning.
Is Zap good in Slay the Spire 2?
In Slay the Spire 2, Zap is a basic skill from the Defect card pool. Its effect: Channel 1 Lightning. The data flags it as a weaker pick, settling at D tier — usually one to pass on unless your deck specifically wants it.
Over 27 tracked runs its win rate sits at 7.7%, 4.9% short of the 12.6% all-deck baseline. It sees niche play, included in only 5.2% of eligible runs. Within Defect runs it’s drafted 96.4% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.0 copies on average.
Its standout pairing so far is Cold Snap, which lifts its win rate by +25.6% when the two share a deck. On the relic side, Data Disk is its standout companion, worth a +59.0% win-rate swing alongside it. It costs 1 energy, gets upgraded 29.6% of the time, and tends to be picked up near floor 1.
Upgrading the card adds -1 EnergyCost to its stat line. Of the runs that drafted it, 2 ended in victory against 24 deaths and 1 abandons. Its most common run-ender is Kaiser Crab Boss, finishing 18.5% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Zap fits a Defect deck.
Zap Win Rate & Pick Rate
At a 7.7% win rate, Zap runs 4.9% behind the 12.6% all-deck baseline — the bars below put the two side by side.
Run Outcomes with Zap
Across the 27 tracked runs that drafted Zap, 2 ended in a win and 25 in a loss — a 7.4% win share, counting abandons as losses.
- Wins 7.4%
- Losses 92.6%
Best Cards to Pair with Zap
Zap’s strongest card pairings so far are Cold Snap (+25.6%), Hologram (+25.6%), and Adaptive Strike (+25.6%), each shown with the win-rate lift it adds.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Zap Win Rate by Class
Exclusive to the Defect, Zap posts a 7.7% win rate over 27 tracked runs.
The Defectappears in 96.4% of its runs (27 tracked)Best Relics for Zap
The relics that swing Zap’s win rate the most are Data Disk (+59.0%), Fresnel Lens (+25.6%), and Bag of Marbles (+25.6%), with each lift shown.
Data Disk3 runs
Fresnel Lens3 runs
Bag of Marbles3 runs
Gremlin Horn3 runs
Eternal Feather3 runs
Pael's Wing3 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Zap Card Details
A 1-energy basic skill, Zap is upgraded 29.6% of the time and tends to enter the deck around floor 1.
Channel 1 Lightning.
Upgrade: -1 EnergyCost
What Ends Runs with Zap
Runs holding Zap end most often against Kaiser Crab Boss (18.5%), The Kin Boss (11.1%), and The Insatiable Boss (7.4%) — the share of its runs each accounts for is shown.
- Kaiser Crab Boss18.5% of runs
- The Kin Boss11.1% of runs
- The Insatiable Boss7.4% of runs
- Queen Boss7.4% of runs
- Knowledge Demon Boss7.4% of runs
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Zap – Frequently Asked Questions
Is Zap good in Slay the Spire 2?
Across 27 tracked runs, Zap has a 7.7% win rate — +4.9% below the average deck. Win rate reflects how often runs that include the card end in victory.
What does Zap do in Slay the Spire 2?
Zap costs 1 energy. Channel 1 Lightning.
What class is Zap in Slay the Spire 2?
Zap is a Basic Defect Skill.
Is Zap worth upgrading in Slay the Spire 2?
Players upgrade Zap in 29.6% of runs. Upgrading it grants -1 EnergyCost.
What is the best relic for Zap?
In tracked runs, Zap has performed best alongside Data Disk, which lifts its win rate by +59.0% over 3 runs together.
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.