Byrd Swoop•Attack

Is Byrd Swoop good in Slay the Spire 2?

Byrd Swoop is an event Event attack in Slay the Spire 2. In combat it resolves as: Deal 14 damage. It currently underperforms most alternatives, sitting at F tier in our Slay the Spire 2 card rankings.

Across 97 recorded runs, decks running it win 16.3% of the time, trailing the 19.0% average by 2.7%. It’s a more selective pick, turning up in just 2.6% of decks that could run it. Defect players keep it in 2.4% 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 White Noise — together they post a +19.3% swing in win rate. It also has strong chemistry with the relic Venerable Tea Set, which moves its win rate by +21.9%. At 0 energy, it’s upgraded in 18.4% of runs and usually joins the deck around floor 10.

Upgraded, it gains +4 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 14 wins, 72 deaths, and 11 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Vantom Boss, which closes out 9.3% of its appearances. Read on for Byrd Swoop’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Event run.

Best Cards to Pair with Byrd Swoop

Ranked by win-rate lift, Byrd Swoop performs best alongside White Noise (+19.3%), Ultimate Defend (+16.8%), and Barrage (+16.8%).

White Noise+19.3%3 runsUltimate Defend+16.8%4 runsBarrage+16.8%4 runsStone Armor+16.8%4 runsTrue Grit+14.6%5 runsAshen Strike+13.9%3 runs

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

Byrd Swoop Win Rate by Class

Byrd Swoop is played across 5 classes, led by Defect (27.3%), Silent (22.2%), and Ironclad (17.9%) by win rate.

The Defect27.3%14 runsThe Silent22.2%11 runsThe Ironclad17.9%30 runsThe Necrobinder10.5%22 runsThe Regent10.5%20 runs

Best Relics for Byrd Swoop

Byrd Swoop pairs best with the relics Venerable Tea Set (+21.9%), Stone Calendar (+19.3%), and Bellows (+19.3%), ranked by win-rate lift.

Venerable Tea Set+21.9%11 runsStone Calendar+19.3%3 runsBellows+19.3%3 runsMeal Ticket+18.9%6 runsPantograph+16.8%9 runsMembership Card+16.8%7 runs

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

Byrd Swoop Card Details

Byrd Swoop is an event attack costing 0 energy; it’s upgraded in 18.4% of runs and usually picked up by floor 10.

Deal 14 damage.

Upgrade: +4 Damage

What Ends Runs with Byrd Swoop

Byrd Swoop’s most common run-enders are Vantom Boss (9.3%), Queen Boss (8.2%), and Ceremonial Beast Boss (8.2%).

• Vantom Boss9.3% of runs
• Queen Boss8.2% of runs
• Ceremonial Beast Boss8.2% of runs
• The Kin Boss6.2% of runs
• The Insatiable Boss6.2% of runs

See Also

Compare Byrd Swoop with the rest of the best Slay the Spire 2 cards, relics, and classes below.