Comet Attack

Is Comet good in Slay the Spire 2?

Comet is a rare Regent attack in Slay the Spire 2. In combat it resolves as: Deal 33 damage. Apply 3 Weak. Apply 3 Vulnerable. It’s a dependable, middle-of-the-pack option, landing at C tier in our rankings.

Across 349 recorded runs, decks running it win 33.6% of the time, comfortably clear of the 14.3% average, by 19.4%. It’s a more selective pick, turning up in just 1.3% of decks that could run it. Offer data is close to a wash — 33.6% of offers taken, 35.4% for runs that picked it against 37.2% for runs that skipped, a pick lift of just -1.8% over 277 decided runs. Regent players keep it in 7.5% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.1 times in the decks that take it.

It performs best next to Bundle of Joy — together they post a +27.3% swing in win rate. It also has strong chemistry with the relic Joss Paper, which moves its win rate by +28.5%. At 0 energy, it’s upgraded in 27.3% of runs and usually joins the deck around floor 17.

Upgraded, it gains +11 Damage, which is why so many decks invest a rest-site upgrade in it. That’s 117 wins, 231 deaths, and 1 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Queen Boss, which closes out 6.3% of its appearances. Read on for Comet’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Regent run.

Pick or Skip: Comet

Out of 848 recorded offers Comet is taken 33.6% of the time, and taking it is worth -1.8% in pick lift — 35.4% for runs that picked it against 37.2% for runs that skipped, across 277 decided runs.

Taken 285 times out of 848 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 Comet

Comet is strongest when it joins the deck in Act 3, where runs win 79.0% across 19 runs — one of 4 recorded pickup windows.

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

Best Cards to Pair with Comet

Ranked by win-rate lift, Comet performs best alongside Bundle of Joy (+27.3%), Monarch's Gaze (+25.1%), and Neutron Aegis (+20.0%).

Bundle of Joy+27.3%30 runsMonarch's Gaze+25.1%23 runsNeutron Aegis+20.0%28 runsPhoton Cut+18.7%49 runsManifest Authority+17.1%38 runsDying Star+16.9%58 runs

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

Comet Win Rate by Class

Comet is drafted only by the Regent, where it holds a 33.6% win rate across 349 runs.

The Regentappears in 7.5% of its runs (349 tracked)

Best Relics for Comet

Comet pairs best with the relics Joss Paper (+28.5%), Vambrace (+28.2%), and The Courier (+25.5%), ranked by win-rate lift.

Joss Paper+28.5%26 runsVambrace+28.2%31 runsThe Courier+25.5%16 runsUnceasing Top+22.8%19 runsIce Cream+22.4%21 runsWar Paint+22.3%55 runs

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

Comet Card Details

Comet is a rare attack costing 0 energy; it’s upgraded in 27.3% of runs and usually picked up by floor 17.

Deal 33 damage. Apply 3 Weak. Apply 3 Vulnerable.

Upgrade: +11 Damage

What Ends Runs with Comet

Comet’s most common run-enders are Queen Boss (6.3%), Kaiser Crab Boss (5.4%), and Knowledge Demon Boss (4.9%).

• Queen Boss6.3% of runs
• Kaiser Crab Boss5.4% of runs
• Knowledge Demon Boss4.9% of runs
• Test Subject Boss4.3% of runs
• Decimillipede Elite4.0% of runs

See Also

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