Flanking•Skill

Is Flanking good in Slay the Spire 2?

Flanking is an uncommon Silent skill in Slay the Spire 2. In combat it resolves as: The enemy takes double attack damage from other players this turn. It ranks among the strongest cards its class can draft right now, earning a spot at S tier in our Slay the Spire 2 card tier list.

Across 30 recorded runs, decks running it win 53.3% of the time, comfortably clear of the 18.9% average, by 34.4%. It’s a more selective pick, turning up in just 0.8% of decks that could run it. Silent players keep it in 3.0% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.2 times in the decks that take it.

It performs best next to Blur — together they post a +13.3% swing in win rate. It also has strong chemistry with the relic Happy Flower, which moves its win rate by +17.5%. At 2 energy, it’s upgraded in 66.7% of runs and usually joins the deck around floor 17.

Upgraded, it gains -1 EnergyCost, which is why so many decks invest a rest-site upgrade in it. That’s 16 wins, 14 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Hunter Killer Normal, which closes out 6.7% of its appearances. Read on for Flanking’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Silent run.

Best Cards to Pair with Flanking

Ranked by win-rate lift, Flanking performs best alongside Blur (+13.3%), Shadow Step (+13.3%), and Fan of Knives (+11.3%).

Blur+13.3%7 runsShadow Step+13.3%4 runsFan of Knives+11.3%6 runsDodge and Roll+11.3%6 runsAbrasive+11.3%6 runsPanache+10.8%3 runs

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

Flanking Win Rate by Class

Flanking is drafted only by the Silent, where it holds a 53.3% win rate across 30 runs.

The Silentappears in 3.0% of its runs (30 tracked)

Best Relics for Flanking

Flanking pairs best with the relics Happy Flower (+17.5%), Potion Belt (+15.6%), and Tingsha (+13.3%), ranked by win-rate lift.

Happy Flower+17.5%6 runsPotion Belt+15.6%5 runsTingsha+13.3%4 runsCentennial Puzzle+13.3%10 runsLantern+11.6%9 runsVajra+11.3%6 runs

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

Flanking Card Details

Flanking is an uncommon skill costing 2 energy; it’s upgraded in 66.7% of runs and usually picked up by floor 17.

The enemy takes double attack damage from other players this turn.

Upgrade: -1 EnergyCost

What Ends Runs with Flanking

Flanking’s most common run-enders are Hunter Killer Normal (6.7%) and Queen Boss (6.7%).

• Hunter Killer Normal6.7% of runs
• Queen Boss6.7% of runs

See Also

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