AstrolabeRelic
Upon pickup, Transform cards, then Upgrade them.
Is Astrolabe good in Slay the Spire 2?
In Slay the Spire 2, Astrolabe is an ancient relic you can pick up on your climb. Its effect: Upon pickup, Transform cards, then Upgrade them. Performance-wise it’s a steady, unspectacular pick rated C tier overall.
Over 26 tracked runs the win rate of decks holding it sits at 44.0%, 25.1% ahead of the 18.9% all-run baseline. It sees lighter play, carried in only 0.7% of runs. It does its best work in the hands of the Defect, who post a 62.5% win rate with it. Within Defect runs specifically, it’s carried 1.4% of the time.
Its standout card pairing is Supercritical, which lifts the relic’s win rate by +56.0% when both are in play. It also works nicely with Tempest, good for a +56.0% win-rate change. It typically enters the deck near floor 24. As an ancient relic, how often it’s offered depends on its rarity tier.
Of the runs that carried it, 11 ended in victory while 14 fell to a defeat. Its most common run-ender is Queen Boss, finishing 11.5% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Astrolabe is worth grabbing.
Astrolabe Win Rate & Pick Rate
At a 44.0% win rate, Astrolabe runs 25.1% ahead of the 18.9% all-run baseline — the bars below put the two side by side.
Run Outcomes with Astrolabe
Across the 26 runs that carried Astrolabe, 11 ended in a win and 15 in a loss — a 42.3% win share, counting abandons as losses.
- Wins 42.3%
- Losses 57.7%
Best Cards with Astrolabe
The cards that gain the most from carrying Astrolabe are Supercritical (+56.0%), Tempest (+56.0%), and Compact (+56.0%), each shown with its win-rate swing.
Supercritical3 runs
Tempest3 runs
Compact3 runs
Cold Snap3 runs
Adaptive Strike3 runs
Momentum Strike4 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Astrolabe Win Rate by Class
Of the 5 classes that carry Astrolabe, it performs best with Defect (62.5%), Necrobinder (50.0%), and Regent (50.0%).
Astrolabe Details
Carried in 0.7% of runs, Astrolabe is an ancient relic typically acquired near floor 24.
Upon pickup, Transform cards, then Upgrade them.
What Ends Runs with Astrolabe
Runs carrying Astrolabe end most often against Queen Boss (11.5%), Bowlbugs Normal (7.7%), and Infested Prisms Elite (7.7%) — the share of its runs each accounts for is shown.
- Queen Boss11.5% of runs
- Bowlbugs Normal7.7% of runs
- Infested Prisms Elite7.7% of runs
Get the Winning Edge
Real-time overlays, automatic match tracking, and exclusive tools — everything you need to climb, free on your PC.
- In-game overlays
- Automatic match tracking
- Desktop-exclusive tools
Help us maintain accuracy! If you notice incorrect stats, missing data, or any issues, your feedback directly improves the quality of our data for the entire community.
Astrolabe – Frequently Asked Questions
Is Astrolabe good in Slay the Spire 2?
Across 26 tracked runs carrying it, Astrolabe wins 44.0% of the time — +25.1% above the average run. Win rate reflects how often runs with the relic end in victory.
What does Astrolabe do in Slay the Spire 2?
Upon pickup, Transform cards, then Upgrade them.
How rare is Astrolabe in Slay the Spire 2?
Astrolabe is an Ancient relic, picked up in 0.7% of tracked runs.
What is the best card to use with Astrolabe?
In tracked runs, Astrolabe has performed best alongside Supercritical, which lifts its win rate by +56.0% over 3 runs together.
Which class is Astrolabe best in?
Astrolabe has its highest win rate with The Defect (62.5%).
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.