ThunderclapAttack
Deal 4 damage and apply 1 Vulnerable to ALL enemies.
Is Thunderclap good in Slay the Spire 2?
Thunderclap is a common Ironclad attack in Slay the Spire 2. In combat it resolves as: Deal 4 damage and apply 1 Vulnerable to ALL enemies. It’s a dependable, middle-of-the-pack option, landing at C tier in our rankings.
Across 7 recorded runs, decks running it win 20.0% of the time, comfortably clear of the 12.6% average, by 7.4%. It’s a more selective pick, turning up in just 1.4% of decks that could run it. Ironclad players keep it in 14.3% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.0 times in the decks that take it.
It performs best next to Thrash — together they post a +30.0% swing in win rate. It also has strong chemistry with the relic Burning Blood, which moves its win rate by 0.0%. At 1 energy, it’s upgraded in 0.0% of runs and usually joins the deck around floor 6.
Upgraded, it gains +3 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 1 wins, 4 deaths, and 2 abandoned runs with it in the deck. Read on for Thunderclap’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Ironclad run.
Thunderclap Win Rate & Pick Rate
Thunderclap’s 20.0% win rate clears the 12.6% all-deck average by 7.4%, the gap charted below.
Run Outcomes with Thunderclap
Thunderclap has 1 wins and 6 losses over 7 tracked runs (14.3% won); abandoned runs count as losses.
- Wins 14.3%
- Losses 85.7%
Thunderclap Win Rate by Class
Thunderclap is drafted only by the Ironclad, where it holds a 20.0% win rate across 7 runs.
The Ironcladappears in 14.3% of its runs (7 tracked)Best Relics for Thunderclap
Thunderclap pairs best with the relics Burning Blood (0.0%) and Gorget (-20.0%), ranked by win-rate lift.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Thunderclap Card Details
Thunderclap is a common attack costing 1 energy; it’s upgraded in 0.0% of runs and usually picked up by floor 6.
Deal 4 damage and apply 1 Vulnerable to ALL enemies.
Upgrade: +3 Damage
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Thunderclap – Frequently Asked Questions
Is Thunderclap good in Slay the Spire 2?
Across 7 tracked runs, Thunderclap has a 20.0% win rate — +7.4% above the average deck. Win rate reflects how often runs that include the card end in victory.
What does Thunderclap do in Slay the Spire 2?
Thunderclap costs 1 energy. Deal 4 damage and apply 1 Vulnerable to ALL enemies.
What class is Thunderclap in Slay the Spire 2?
Thunderclap is a Common Ironclad Attack.
Is Thunderclap worth upgrading in Slay the Spire 2?
Players upgrade Thunderclap in 0.0% of runs. Upgrading it grants +3 Damage.
What is the best relic for Thunderclap?
In tracked runs, Thunderclap has performed best alongside Burning Blood, which lifts its win rate by 0.0% over 7 runs together.
See Also
Compare Thunderclap with the rest of the best Slay the Spire 2 cards, relics, and classes below.