ThunderPower
Whenever you Evoke Lightning, deal 6 damage to each enemy hit.
Is Thunder good in Slay the Spire 2?
Thunder is an uncommon Defect power in Slay the Spire 2. In combat it resolves as: Whenever you Evoke Lightning, deal 6 damage to each enemy hit. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.
Across 5 recorded runs, decks running it win 0.0% of the time, trailing the 12.6% average by 12.6%. It’s a more selective pick, turning up in just 1.0% of decks that could run it. Defect players keep it in 17.9% 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 Defend — together they post a 0.0% swing in win rate. It also has strong chemistry with the relic Cracked Core, which moves its win rate by 0.0%. At 1 energy, it’s upgraded in 50.0% of runs and usually joins the deck around floor 13.
That’s 0 wins, 5 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Kaiser Crab Boss, which closes out 40.0% of its appearances. Read on for Thunder’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Defect run.
Thunder Win Rate & Pick Rate
Thunder’s 0.0% win rate trails the 12.6% all-deck average by 12.6%, the gap charted below.
Run Outcomes with Thunder
Thunder has 0 wins and 5 losses over 5 tracked runs (0.0% won); abandoned runs count as losses.
- Wins 0.0%
- Losses 100.0%
Best Cards to Pair with Thunder
Ranked by win-rate lift, Thunder performs best alongside Defend (0.0%), Defragment (0.0%), and Dualcast (0.0%).
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Thunder Win Rate by Class
Thunder is drafted only by the Defect, where it holds a 0.0% win rate across 5 runs.
The Defectappears in 17.9% of its runs (5 tracked)Best Relics for Thunder
Thunder pairs best with the relics Cracked Core (0.0%), ranked by win-rate lift.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Thunder Card Details
Thunder is an uncommon power costing 1 energy; it’s upgraded in 50.0% of runs and usually picked up by floor 13.
Whenever you Evoke Lightning, deal 6 damage to each enemy hit.
What Ends Runs with Thunder
Thunder’s most common run-enders are Kaiser Crab Boss (40.0%).
- Kaiser Crab Boss40.0% of runs
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Thunder – Frequently Asked Questions
Is Thunder good in Slay the Spire 2?
Across 5 tracked runs, Thunder has a 0.0% win rate — +12.6% below the average deck. Win rate reflects how often runs that include the card end in victory.
What does Thunder do in Slay the Spire 2?
Thunder costs 1 energy. Whenever you Evoke Lightning, deal 6 damage to each enemy hit.
What class is Thunder in Slay the Spire 2?
Thunder is an Uncommon Defect Power.
Is Thunder worth upgrading in Slay the Spire 2?
Thunder can be upgraded at a rest site to improve its effect.
What is the best relic for Thunder?
In tracked runs, Thunder has performed best alongside Cracked Core, which lifts its win rate by 0.0% over 5 runs together.
See Also
Compare Thunder with the rest of the best Slay the Spire 2 cards, relics, and classes below.