Big MushroomRelic
Upon pickup, raise your Max HP by. At the start of each combat, draw fewer cards.
Is Big Mushroom good in Slay the Spire 2?
In Slay the Spire 2, Big Mushroom is an event relic you can pick up on your climb. Its effect: Upon pickup, raise your Max HP by. At the start of each combat, draw fewer cards. Right now it’s a high-value grab, sitting at B tier — one of the relics most worth taking.
Over 32 tracked runs the win rate of decks holding it sits at 48.4%, 29.4% ahead of the 18.9% all-run baseline. It sees lighter play, carried in only 0.8% of runs. It does its best work in the hands of the Silent, who post a 60.0% win rate with it. Within Silent runs specifically, it’s carried 0.5% of the time.
Its standout card pairing is Tremble, which lifts the relic’s win rate by +51.6% when both are in play. It also works nicely with Haunt, good for a +51.6% win-rate change. It typically enters the deck near floor 40. As an event relic, how often it’s offered depends on its rarity tier.
Of the runs that carried it, 15 ended in victory while 16 fell to a defeat. Its most common run-ender is Queen Boss, finishing 12.5% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Big Mushroom is worth grabbing.
Big Mushroom Win Rate & Pick Rate
At a 48.4% win rate, Big Mushroom runs 29.4% ahead of the 18.9% all-run baseline — the bars below put the two side by side.
Run Outcomes with Big Mushroom
Across the 32 runs that carried Big Mushroom, 15 ended in a win and 17 in a loss — a 46.9% win share, counting abandons as losses.
- Wins 46.9%
- Losses 53.1%
Best Cards with Big Mushroom
The cards that gain the most from carrying Big Mushroom are Tremble (+51.6%), Haunt (+51.6%), and Capture Spirit (+51.6%), each shown with its win-rate swing.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Big Mushroom Win Rate by Class
Of the 5 classes that carry Big Mushroom, it performs best with Silent (60.0%), Necrobinder (54.5%), and Ironclad (50.0%).
Big Mushroom Details
Carried in 0.8% of runs, Big Mushroom is an event relic typically acquired near floor 40.
Upon pickup, raise your Max HP by. At the start of each combat, draw fewer cards.
What Ends Runs with Big Mushroom
Runs carrying Big Mushroom end most often against Queen Boss (12.5%), Test Subject Boss (12.5%), and Doormaker Boss (9.4%) — the share of its runs each accounts for is shown.
- Queen Boss12.5% of runs
- Test Subject Boss12.5% of runs
- Doormaker Boss9.4% of runs
- Aeonglass Boss6.3% of runs
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Big Mushroom – Frequently Asked Questions
Is Big Mushroom good in Slay the Spire 2?
Across 32 tracked runs carrying it, Big Mushroom wins 48.4% of the time — +29.4% above the average run. Win rate reflects how often runs with the relic end in victory.
What does Big Mushroom do in Slay the Spire 2?
Upon pickup, raise your Max HP by. At the start of each combat, draw fewer cards.
How rare is Big Mushroom in Slay the Spire 2?
Big Mushroom is an Event relic, picked up in 0.8% of tracked runs.
What is the best card to use with Big Mushroom?
In tracked runs, Big Mushroom has performed best alongside Tremble, which lifts its win rate by +51.6% over 3 runs together.
Which class is Big Mushroom best in?
Big Mushroom has its highest win rate with The Silent (60.0%).
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.