Biased CognitionPower
Gain 4 Focus. At the start of your turn, lose 1 Focus.
Is Biased Cognition good in Slay the Spire 2?
In Slay the Spire 2, Biased Cognition is an ancient power from the Defect card pool. Its effect: Gain 4 Focus. At the start of your turn, lose 1 Focus. The data flags it as a weaker pick, settling at D tier — usually one to pass on unless your deck specifically wants it.
Over 4 tracked runs its win rate sits at 25.0%, 6.0% ahead of the 18.9% all-deck baseline. It sees niche play, included in only 0.1% of eligible runs. Within Defect runs it’s drafted 0.7% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.0 copies on average.
Its standout pairing so far is Cold Snap, which lifts its win rate by +1.9% when the two share a deck. On the relic side, Cracked Core is its standout companion, worth a +1.9% win-rate swing alongside it. It costs 1 energy, gets upgraded 100.0% of the time, and tends to be picked up near floor 30.
Of the runs that drafted it, 1 ended in victory against 3 deaths and 0 abandons. See the synergies, class split, and threats below for the full picture of where Biased Cognition fits a Defect deck.
Biased Cognition Win Rate & Pick Rate
At a 25.0% win rate, Biased Cognition runs 6.0% ahead of the 18.9% all-deck baseline — the bars below put the two side by side.
Run Outcomes with Biased Cognition
Across the 4 tracked runs that drafted Biased Cognition, 1 ended in a win and 3 in a loss — a 25.0% win share, counting abandons as losses.
- Wins 25.0%
- Losses 75.0%
Best Cards to Pair with Biased Cognition
Biased Cognition’s strongest card pairings so far are Cold Snap (+1.9%), Coolheaded (+1.9%), and Strike (+1.9%), each shown with the win-rate lift it adds.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Biased Cognition Win Rate by Class
Exclusive to the Defect, Biased Cognition posts a 25.0% win rate over 4 tracked runs.
The Defectappears in 0.7% of its runs (4 tracked)Best Relics for Biased Cognition
The relics that swing Biased Cognition’s win rate the most are Cracked Core (+1.9%) and Dusty Tome (0.0%), with each lift shown.
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Biased Cognition Card Details
A 1-energy ancient power, Biased Cognition is upgraded 100.0% of the time and tends to enter the deck around floor 30.
Gain 4 Focus. At the start of your turn, lose 1 Focus.
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Biased Cognition – Frequently Asked Questions
Is Biased Cognition good in Slay the Spire 2?
Across 4 tracked runs, Biased Cognition has a 25.0% win rate — +6.0% above the average deck. Win rate reflects how often runs that include the card end in victory.
What does Biased Cognition do in Slay the Spire 2?
Biased Cognition costs 1 energy. Gain 4 Focus. At the start of your turn, lose 1 Focus.
What class is Biased Cognition in Slay the Spire 2?
Biased Cognition is an Ancient Defect Power.
Is Biased Cognition worth upgrading in Slay the Spire 2?
Biased Cognition can be upgraded at a rest site to improve its effect.
What is the best relic for Biased Cognition?
In tracked runs, Biased Cognition has performed best alongside Cracked Core, which lifts its win rate by +1.9% over 3 runs together.
See Also
Keep exploring Slay the Spire 2 tier lists and stats below.