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 640 recorded runs, decks running it win 24.3% of the time, comfortably clear of the 14.3% average, by 10.0%. It’s a more selective pick, turning up in just 2.4% of decks that could run it. Offer data is close to a wash — 12.3% of offers taken, 24.1% for runs that picked it against 22.8% for runs that skipped, a pick lift of just +1.4% over 518 decided runs. Defect players keep it in 0.2% 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 Make It So — together they post a +29.1% swing in win rate. It also has strong chemistry with the relic Joss Paper, which moves its win rate by +35.3%. At 0 energy, it’s upgraded in 22.9% 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 154 wins, 480 deaths, and 6 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Decimillipede Elite, which closes out 5.6% 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.

Pick or Skip: Collision Course

Out of 5124 recorded offers Collision Course is taken 12.3% of the time, and taking it is worth +1.4% in pick lift — 24.1% for runs that picked it against 22.8% for runs that skipped, across 518 decided runs.

Taken 633 times out of 5124 offers.

Pick rate when offered counts offers, not runs: out of every time the game put this in front of a player, how often it was taken. It is not the same number as the share of runs that end up containing it.

Pick lift is the sample-adjusted gap between runs that took the option and runs that passed on it. It is the fair way to rank choices, because raw win rates put the smallest samples on top.

When to Pick Up Collision Course

Collision Course is strongest when it joins the deck in Act 3, where runs win 79.3% across 29 runs — one of 4 recorded pickup windows.

Win rate of runs by the act Collision Course entered the deck. Acts that have not reached the sample floor show their run count only.

Best Cards to Pair with Collision Course

Ranked by win-rate lift, Collision Course performs best alongside Make It So (+29.1%), Decisions, Decisions (+23.3%), and Big Bang (+22.4%).

Make It So+29.1%62 runsDecisions, Decisions+23.3%54 runsBig Bang+22.4%99 runsGenesis+22.3%66 runsSword Sage+22.2%49 runsDying Star+21.1%68 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 Defect (25.0%) and Regent (24.3%) by win rate.

The Defect25.0%12 runsThe Regent24.3%615 runs

Best Relics for Collision Course

Collision Course pairs best with the relics Joss Paper (+35.3%), Regalite (+34.6%), and Unceasing Top (+34.4%), ranked by win-rate lift.

Joss Paper+35.3%31 runsRegalite+34.6%23 runsUnceasing Top+34.4%18 runsTuning Fork+32.4%50 runsHappy Flower+29.5%93 runsTungsten Rod+29.4%15 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 22.9% of runs and usually picked up by floor 10.

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 Decimillipede Elite (5.6%), Knowledge Demon Boss (5.5%), and Kaiser Crab Boss (5.2%).

• Decimillipede Elite5.6% of runs
• Knowledge Demon Boss5.5% of runs
• Kaiser Crab Boss5.2% of runs
• Queen Boss4.1% of runs
• Entomancer Elite3.6% of runs

See Also

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