CoolantPower
At the start of your turn, gain 2 Block for each unique Orb you have.
Is Coolant good in Slay the Spire 2?
Coolant is a rare Defect power in Slay the Spire 2. In combat it resolves as: At the start of your turn, gain 2 Block for each unique Orb you have. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.
Across 3 recorded runs, decks running it win 0.0% of the time, trailing the 12.6% average by 12.6%. It’s a more selective pick, turning up in just 0.6% of decks that could run it. Defect players keep it in 10.7% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.0 times in the decks that take it.
It performs best next to Creative AI — together they post a 0.0% swing in win rate. At 1 energy, it’s upgraded in 0.0% of runs and usually joins the deck around floor 21.
That’s 0 wins, 3 deaths, and 0 abandoned runs with it in the deck. Read on for Coolant’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Defect run.
Coolant Win Rate & Pick Rate
Coolant’s 0.0% win rate trails the 12.6% all-deck average by 12.6%, the gap charted below.
Run Outcomes with Coolant
Coolant has 0 wins and 3 losses over 3 tracked runs (0.0% won); abandoned runs count as losses.
- Wins 0.0%
- Losses 100.0%
Best Cards to Pair with Coolant
Ranked by win-rate lift, Coolant performs best alongside Creative AI (0.0%), Defend (0.0%), and Dualcast (0.0%).
Based on small co-occurring samples — treat these as early signals, not final verdicts.
Coolant Win Rate by Class
Coolant is drafted only by the Defect, where it holds a 0.0% win rate across 3 runs.
The Defectappears in 10.7% of its runs (3 tracked)Coolant Card Details
Coolant is a rare power costing 1 energy; it’s upgraded in 0.0% of runs and usually picked up by floor 21.
At the start of your turn, gain 2 Block for each unique Orb you have.
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Coolant – Frequently Asked Questions
Is Coolant good in Slay the Spire 2?
Across 3 tracked runs, Coolant has a 0.0% win rate — +12.6% below the average deck. Win rate reflects how often runs that include the card end in victory.
What does Coolant do in Slay the Spire 2?
Coolant costs 1 energy. At the start of your turn, gain 2 Block for each unique Orb you have.
What class is Coolant in Slay the Spire 2?
Coolant is a Rare Defect Power.
Is Coolant worth upgrading in Slay the Spire 2?
Coolant can be upgraded at a rest site to improve its effect.
See Also
Compare Coolant with the rest of the best Slay the Spire 2 cards, relics, and classes below.