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 16 recorded runs, decks running it win 12.5% of the time, right in line with the typical deck. It’s a more selective pick, turning up in just 3.1% of decks that could run it. Regent players keep it in 9.6% 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 Bulwark — together they post a +54.2% swing in win rate. It also has strong chemistry with the relic Akabeko, which moves its win rate by +54.2%. At 0 energy, it’s upgraded in 20.0% of runs and usually joins the deck around floor 8.

Upgraded, it gains +4 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 2 wins, 14 deaths, and 0 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is The Insatiable Boss, which closes out 12.5% 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 Bulwark (+54.2%), Radiate (+20.8%), and Know Thy Place (+20.8%).

Bulwark+54.2%3 runsRadiate+20.8%3 runsKnow Thy Place+20.8%3 runsManifest Authority+20.8%3 runsComet+20.8%3 runsSolar Strike+20.8%3 runs

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

Collision Course Win Rate by Class

Collision Course is drafted only by the Regent, where it holds a 12.5% win rate across 16 runs.

The Regentappears in 9.6% of its runs (16 tracked)

Best Relics for Collision Course

Collision Course pairs best with the relics Akabeko (+54.2%), Strike Dummy (+20.8%), and Mercury Hourglass (+20.8%), ranked by win-rate lift.

Akabeko+54.2%3 runsStrike Dummy+20.8%3 runsMercury Hourglass+20.8%3 runsDivine Right+0.8%15 runsBronze Scales-12.5%4 runsFestive Popper-12.5%3 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 20.0% of runs and usually picked up by floor 8.

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 (12.5%) and Terror Eel Elite (12.5%).

• The Insatiable Boss12.5% of runs
• Terror Eel Elite12.5% of runs

See Also

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