Collision Course•Attack

Is Collision Course good in Slay the Spire 2?

Collision Course is a common Regent attack in Slay the Spire 2. In combat it resolves as: Deal 11 damage. Add a Debris into your Hand. It currently underperforms most alternatives, sitting at D tier in our Slay the Spire 2 card rankings.

Across 60 recorded runs, decks running it win 24.5% of the time, comfortably clear of the 19.0% average, by 5.6%. It’s a more selective pick, turning up in just 1.6% of decks that could run it. Regent players keep it in 8.6% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.3 times in the decks that take it.

It performs best next to Crush Under — together they post a +22.7% swing in win rate. It also has strong chemistry with the relic Gorget, which moves its win rate by +25.2%. At 0 energy, it’s upgraded in 19.2% of runs and usually joins the deck around floor 9.

Upgraded, it gains +4 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 13 wins, 40 deaths, and 7 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is The Insatiable Boss, which closes out 10.0% of its appearances. Read on for Collision Course’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Regent run.

Best Cards to Pair with Collision Course

Ranked by win-rate lift, Collision Course performs best alongside Crush Under (+22.7%), Heirloom Hammer (+18.5%), and Cosmic Indifference (+17.7%).

Crush Under+22.7%11 runsHeirloom Hammer+18.5%5 runsCosmic Indifference+17.7%10 runsFurnace+17.7%10 runsDying Star+14.4%5 runsDoubt+14.4%4 runs

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

Collision Course Win Rate by Class

Collision Course is played across 2 classes, led by Regent (24.5%) and Silent (0.0%) by win rate.

The Regent24.5%59 runsThe Silent0.0%1 runs

Best Relics for Collision Course

Collision Course pairs best with the relics Gorget (+25.2%), Venerable Tea Set (+25.2%), and Anchor (+22.4%), ranked by win-rate lift.

Gorget+25.2%10 runsVenerable Tea Set+25.2%9 runsAnchor+22.4%8 runsPendulum+20.0%9 runsCandelabra+18.5%5 runsPermafrost+17.4%4 runs

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

Collision Course Card Details

Collision Course is a common attack costing 0 energy; it’s upgraded in 19.2% of runs and usually picked up by floor 9.

Deal 11 damage. Add a Debris into your Hand.

Upgrade: +4 Damage

What Ends Runs with Collision Course

Collision Course’s most common run-enders are The Insatiable Boss (10.0%), Kaiser Crab Boss (8.3%), and Decimillipede Elite (6.7%).

• The Insatiable Boss10.0% of runs
• Kaiser Crab Boss8.3% of runs
• Decimillipede Elite6.7% of runs
• Knowledge Demon Boss5.0% of runs
• Terror Eel Elite5.0% of runs

See Also

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