OutbreakPower
Every you apply Poison, deal 11 damage to ALL enemies.
Is Outbreak good in Slay the Spire 2?
In Slay the Spire 2, Outbreak is an uncommon power from the Silent card pool. Its effect: Every you apply Poison, deal 11 damage to ALL enemies. Performance-wise it’s a solid if unspectacular include, rated C tier overall.
Over 14 tracked runs its win rate sits at 22.2%, 9.6% ahead of the 12.6% all-deck baseline. It sees niche play, included in only 2.7% of eligible runs. Within Silent runs it’s drafted 13.5% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.1 copies on average.
Its standout pairing so far is Pounce, which lifts its win rate by +27.8% when the two share a deck. On the relic side, Pendulum is its standout companion, worth a +44.5% win-rate swing alongside it. It costs 1 energy, gets upgraded 20.0% of the time, and tends to be picked up near floor 15.
Of the runs that drafted it, 2 ended in victory against 7 deaths and 5 abandons. See the synergies, class split, and threats below for the full picture of where Outbreak fits a Silent deck.
Outbreak Win Rate & Pick Rate
At a 22.2% win rate, Outbreak runs 9.6% ahead of the 12.6% all-deck baseline — the bars below put the two side by side.
Run Outcomes with Outbreak
Across the 14 tracked runs that drafted Outbreak, 2 ended in a win and 12 in a loss — a 14.3% win share, counting abandons as losses.
- Wins 14.3%
- Losses 85.7%
Best Cards to Pair with Outbreak
Outbreak’s strongest card pairings so far are Pounce (+27.8%), Haze (+27.8%), and Accelerant (+27.8%), each shown with the win-rate lift it adds.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Outbreak Win Rate by Class
Exclusive to the Silent, Outbreak posts a 22.2% win rate over 14 tracked runs.
The Silentappears in 13.5% of its runs (14 tracked)Best Relics for Outbreak
The relics that swing Outbreak’s win rate the most are Pendulum (+44.5%), Silver Crucible (+44.5%), and Oddly Smooth Stone (+44.5%), with each lift shown.
Pendulum3 runs
Silver Crucible4 runs
Oddly Smooth Stone5 runs
Yummy Cookie4 runs
Bag of Marbles3 runs
Bronze Scales3 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Outbreak Card Details
A 1-energy uncommon power, Outbreak is upgraded 20.0% of the time and tends to enter the deck around floor 15.
Every you apply Poison, deal 11 damage to ALL enemies.
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Outbreak – Frequently Asked Questions
Is Outbreak good in Slay the Spire 2?
Across 14 tracked runs, Outbreak has a 22.2% win rate — +9.6% above the average deck. Win rate reflects how often runs that include the card end in victory.
What does Outbreak do in Slay the Spire 2?
Outbreak costs 1 energy. Every you apply Poison, deal 11 damage to ALL enemies.
What class is Outbreak in Slay the Spire 2?
Outbreak is an Uncommon Silent Power.
Is Outbreak worth upgrading in Slay the Spire 2?
Outbreak can be upgraded at a rest site to improve its effect.
What is the best relic for Outbreak?
In tracked runs, Outbreak has performed best alongside Pendulum, which lifts its win rate by +44.5% over 3 runs together.
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.