Ball Lightning•Attack

Is Ball Lightning good in Slay the Spire 2?

Ball Lightning is a common Defect attack in Slay the Spire 2. In combat it resolves as: Deal 7 damage. Channel 1 Lightning. It’s a dependable, middle-of-the-pack option, landing at C tier in our rankings.

Across 6 recorded runs, decks running it win 16.7% of the time, comfortably clear of the 12.6% average, by 4.0%. It’s a more selective pick, turning up in just 1.2% of decks that could run it. Defect players keep it in 21.4% 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 Coolheaded — together they post a +16.7% swing in win rate. It also has strong chemistry with the relic Akabeko, which moves its win rate by +16.7%. At 1 energy, it’s upgraded in 14.3% of runs and usually joins the deck around floor 11.

Upgraded, it gains +3 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 1 wins, 5 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is The Insatiable Boss, which closes out 33.3% of its appearances. Read on for Ball Lightning’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Defect run.

Best Cards to Pair with Ball Lightning

Ranked by win-rate lift, Ball Lightning performs best alongside Coolheaded (+16.7%), Compile Driver (+8.3%), and Strike (0.0%).

Coolheaded+16.7%3 runsCompile Driver+8.3%4 runsStrike0.0%6 runsZap0.0%6 runsDefend0.0%6 runsDualcast0.0%6 runs

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

Ball Lightning Win Rate by Class

Ball Lightning is drafted only by the Defect, where it holds a 16.7% win rate across 6 runs.

The Defectappears in 21.4% of its runs (6 tracked)

Best Relics for Ball Lightning

Ball Lightning pairs best with the relics Akabeko (+16.7%) and Cracked Core (+8.3%), ranked by win-rate lift.

Akabeko+16.7%3 runsCracked Core+8.3%4 runs

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

Ball Lightning Card Details

Ball Lightning is a common attack costing 1 energy; it’s upgraded in 14.3% of runs and usually picked up by floor 11.

Deal 7 damage. Channel 1 Lightning.

Upgrade: +3 Damage

What Ends Runs with Ball Lightning

Ball Lightning’s most common run-enders are The Insatiable Boss (33.3%) and Knowledge Demon Boss (33.3%).

• The Insatiable Boss33.3% of runs
• Knowledge Demon Boss33.3% of runs

See Also

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