Bolas•Attack

Is Bolas good in Slay the Spire 2?

In Slay the Spire 2, Bolas is a rare attack from the Colorless card pool. Its effect: Deal 3 damage. At the start of your next turn, return this to your Hand. The data flags it as a weaker pick, settling at D tier — usually one to pass on unless your deck specifically wants it.

Over 27 tracked runs its win rate sits at 26.9%, 8.0% ahead of the 19.0% all-deck baseline. It sees niche play, included in only 0.7% of eligible runs. Within Silent runs it’s drafted 0.4% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.1 copies on average.

Its standout pairing so far is Clumsy, which lifts its win rate by +9.2% when the two share a deck. On the relic side, Oddly Smooth Stone is its standout companion, worth a +20.9% win-rate swing alongside it. It costs 0 energy, gets upgraded 20.7% of the time, and tends to be picked up near floor 21.

Upgrading the card adds +1 Damage to its stat line. Of the runs that drafted it, 7 ended in victory against 19 deaths and 1 abandons. Its most common run-ender is Knowledge Demon Boss, finishing 14.8% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Bolas fits a Colorless deck.

Best Cards to Pair with Bolas

Bolas’s strongest card pairings so far are Clumsy (+9.2%), Master of Strategy (+9.2%), and Assassinate (+9.2%), each shown with the win-rate lift it adds.

Clumsy+9.2%3 runsMaster of Strategy+9.2%3 runsAssassinate+9.2%3 runsBackstab+9.2%3 runsBlade Dance+9.2%3 runsAscender's Bane+8.0%12 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Bolas Win Rate by Class

Of the 5 classes that draft Bolas, it performs best with Silent (50.0%), Ironclad (33.3%), and Regent (20.0%).

The Silent50.0%4 runsThe Ironclad33.3%6 runsThe Regent20.0%6 runsThe Necrobinder20.0%5 runsThe Defect16.7%6 runs

Best Relics for Bolas

The relics that swing Bolas’s win rate the most are Oddly Smooth Stone (+20.9%), Pendulum (+17.7%), and Letter Opener (+13.7%), with each lift shown.

Oddly Smooth Stone+20.9%4 runsPendulum+17.7%5 runsLetter Opener+13.7%4 runsWar Paint+11.0%5 runsWhetstone+9.2%4 runsReptile Trinket+9.2%3 runs

Based on small co-occurring samples — treat these as early signals, not final verdicts.

Bolas Card Details

A 0-energy rare attack, Bolas is upgraded 20.7% of the time and tends to enter the deck around floor 21.

Deal 3 damage. At the start of your next turn, return this to your Hand.

Upgrade: +1 Damage

What Ends Runs with Bolas

Runs holding Bolas end most often against Knowledge Demon Boss (14.8%), Terror Eel Elite (7.4%), and Kaiser Crab Boss (7.4%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss14.8% of runs
• Terror Eel Elite7.4% of runs
• Kaiser Crab Boss7.4% of runs
• Queen Boss7.4% of runs
• The Insatiable Boss7.4% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.