CalcifyPower
Osty's attacks deal 4 additional damage.
Is Calcify good in Slay the Spire 2?
In Slay the Spire 2, Calcify is an uncommon power from the Necrobinder card pool. Its effect: Osty's attacks deal 4 additional damage. Right now it’s a premium pick that sits at B tier — one of the better cards you can add to a deck this run.
Over 17 tracked runs its win rate sits at 25.0%, 12.4% ahead of the 12.6% all-deck baseline. It sees niche play, included in only 3.3% of eligible runs. Within Necrobinder runs it’s drafted 9.9% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.2 copies on average.
Its standout pairing so far is Clumsy, which lifts its win rate by +50.0% when the two share a deck. On the relic side, Gorget is its standout companion, worth a +50.0% win-rate swing alongside it. It costs 1 energy, gets upgraded 23.8% of the time, and tends to be picked up near floor 8.
Of the runs that drafted it, 4 ended in victory against 12 deaths and 1 abandons. Its most common run-ender is Phrog Parasite Elite, finishing 11.8% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Calcify fits a Necrobinder deck.
Calcify Win Rate & Pick Rate
At a 25.0% win rate, Calcify runs 12.4% ahead of the 12.6% all-deck baseline — the bars below put the two side by side.
Run Outcomes with Calcify
Across the 17 tracked runs that drafted Calcify, 4 ended in a win and 13 in a loss — a 23.5% win share, counting abandons as losses.
- Wins 23.5%
- Losses 76.5%
Calcify Win Rate by Class
Exclusive to the Necrobinder, Calcify posts a 25.0% win rate over 17 tracked runs.
The Necrobinderappears in 9.9% of its runs (17 tracked)Best Relics for Calcify
The relics that swing Calcify’s win rate the most are Gorget (+50.0%), Bag of Marbles (+41.7%), and Bag of Preparation (+25.0%), with each lift shown.
Gorget4 runs
Bag of Marbles3 runs
Bag of Preparation3 runs
Lasting Candy3 runs
War Paint3 runs
Fresnel Lens3 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Calcify Card Details
A 1-energy uncommon power, Calcify is upgraded 23.8% of the time and tends to enter the deck around floor 8.
Osty's attacks deal 4 additional damage.
What Ends Runs with Calcify
Runs holding Calcify end most often against Phrog Parasite Elite (11.8%) and Bygone Effigy Elite (11.8%) — the share of its runs each accounts for is shown.
- Phrog Parasite Elite11.8% of runs
- Bygone Effigy Elite11.8% of runs
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Calcify – Frequently Asked Questions
Is Calcify good in Slay the Spire 2?
Across 17 tracked runs, Calcify has a 25.0% win rate — +12.4% above the average deck. Win rate reflects how often runs that include the card end in victory.
What does Calcify do in Slay the Spire 2?
Calcify costs 1 energy. Osty's attacks deal 4 additional damage.
What class is Calcify in Slay the Spire 2?
Calcify is an Uncommon Necrobinder Power.
Is Calcify worth upgrading in Slay the Spire 2?
Calcify can be upgraded at a rest site to improve its effect.
What is the best relic for Calcify?
In tracked runs, Calcify has performed best alongside Gorget, which lifts its win rate by +50.0% over 4 runs together.
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.