Cracked CoreRelic
At the start of each combat, Channel Lightning.
Is Cracked Core good in Slay the Spire 2?
In Slay the Spire 2, Cracked Core is a starter relic you can pick up on your climb. Its effect: At the start of each combat, Channel Lightning. The data marks it as a weaker relic, settling at F tier — rarely a run-defining grab.
Over 550 tracked runs the win rate of decks holding it sits at 14.5%, 4.5% short of the 19.0% all-run baseline. It sees lighter play, carried in only 14.5% of runs. It does its best work in the hands of the Defect, who post a 14.5% win rate with it. Within Defect runs specifically, it’s carried 94.2% of the time.
Its standout card pairing is Rolling Boulder, which lifts the relic’s win rate by +85.5% when both are in play. It also works nicely with Scrawl, good for a +52.2% win-rate change. It typically enters the deck near floor 1. As a starter relic, how often it’s offered depends on its rarity tier.
Of the runs that carried it, 60 ended in victory while 355 fell to a defeat. Its most common run-ender is Queen Boss, finishing 4.4% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Cracked Core is worth grabbing.
Cracked Core Win Rate & Pick Rate
At a 14.5% win rate, Cracked Core runs 4.5% behind the 19.0% all-run baseline — the bars below put the two side by side.
Run Outcomes with Cracked Core
Across the 550 runs that carried Cracked Core, 60 ended in a win and 490 in a loss — a 10.9% win share, counting abandons as losses.
- Wins 10.9%
- Losses 89.1%
Best Cards with Cracked Core
The cards that gain the most from carrying Cracked Core are Rolling Boulder (+85.5%), Scrawl (+52.2%), and Entropy (+52.2%), each shown with its win-rate swing.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Cracked Core Win Rate by Class
Cracked Core’s class data comes mostly from the Defect, at a 14.5% win rate over 550 runs.
The Defectappears in 94.2% of its runs (550 tracked)Cracked Core Details
Carried in 14.5% of runs, Cracked Core is a starter relic typically acquired near floor 1.
At the start of each combat, Channel Lightning.
What Ends Runs with Cracked Core
Runs carrying Cracked Core end most often against Queen Boss (4.4%), Kaiser Crab Boss (3.6%), and Knowledge Demon Boss (3.6%) — the share of its runs each accounts for is shown.
- Queen Boss4.4% of runs
- Kaiser Crab Boss3.6% of runs
- Knowledge Demon Boss3.6% of runs
- Phantasmal Gardeners Elite3.5% of runs
- Lagavulin Matriarch Boss3.1% of runs
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Cracked Core – Frequently Asked Questions
Is Cracked Core good in Slay the Spire 2?
Across 550 tracked runs carrying it, Cracked Core wins 14.5% of the time — +4.5% below the average run. Win rate reflects how often runs with the relic end in victory.
What does Cracked Core do in Slay the Spire 2?
At the start of each combat, Channel Lightning.
How rare is Cracked Core in Slay the Spire 2?
Cracked Core is a Starter relic, picked up in 14.5% of tracked runs.
What is the best card to use with Cracked Core?
In tracked runs, Cracked Core has performed best alongside Rolling Boulder, which lifts its win rate by +85.5% over 3 runs together.
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.