Zap•Skill

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 F tier — usually one to pass on unless your deck specifically wants it.

Over 574 tracked runs its win rate sits at 14.8%, 4.1% short of the 18.9% all-deck baseline. Players reach for it often — it shows up in 15.2% of runs that can take it. Within Defect runs it’s drafted 98.3% 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 Fasten, which lifts its win rate by +22.6% when the two share a deck. On the relic side, Sword of Jade is its standout companion, worth a +29.2% win-rate swing alongside it. It costs 1 energy, gets upgraded 37.3% 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, 65 ended in victory against 373 deaths and 136 abandons. Its most common run-ender is Queen Boss, finishing 4.7% 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.

Best Cards to Pair with Zap

Zap’s strongest card pairings so far are Fasten (+22.6%), Production (+20.8%), and Prolong (+20.8%), each shown with the win-rate lift it adds.

Fasten+22.6%11 runsProduction+20.8%12 runsProlong+20.8%12 runsMachine Learning+20.4%41 runsDecay+19.2%14 runsEcho Form+17.5%47 runs

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 14.8% win rate over 574 tracked runs.

The Defectappears in 98.3% of its runs (574 tracked)

Best Relics for Zap

The relics that swing Zap’s win rate the most are Sword of Jade (+29.2%), Iron Club (+29.2%), and Joss Paper (+27.1%), with each lift shown.

Sword of Jade+29.2%7 runsIron Club+29.2%9 runsJoss Paper+27.1%16 runsVenerable Tea Set???+24.6%11 runsIntimidating Helmet+23.7%13 runsGlitter+23.3%9 runs

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

Zap Card Details

A 1-energy basic skill, Zap is upgraded 37.3% 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 Queen Boss (4.7%), Kaiser Crab Boss (4.2%), and Knowledge Demon Boss (3.5%) — the share of its runs each accounts for is shown.

• Queen Boss4.7% of runs
• Kaiser Crab Boss4.2% of runs
• Knowledge Demon Boss3.5% of runs
• Phantasmal Gardeners Elite3.3% of runs
• Decimillipede Elite3.1% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.