Big Bang Skill

Is Big Bang good in Slay the Spire 2?

In Slay the Spire 2, Big Bang is a rare skill from the Regent card pool. Its effect: Draw cards. Gain Energy. Gain Stars. Forge. Performance-wise it’s a solid if unspectacular include, rated C tier overall.

Over 452 tracked runs its win rate sits at 40.0%, 26.2% ahead of the 13.8% all-deck baseline. It sees niche play, included in only 2.2% of eligible runs. When it is actually offered players take it 64.4% of the time, and that looks correct: those runs win 43.3% against 38.3% for runs that passed, a +4.8% pick lift over 349 decided runs. Within Regent runs it’s drafted 13.1% of the time, making it a regular part of that class’s decks. Decks that include it run about 1.9 copies on average.

Its standout pairing so far is Heirloom Hammer, which lifts its win rate by +27.5% when the two share a deck. On the relic side, The Courier is its standout companion, worth a +28.0% win-rate swing alongside it. It costs 0 energy, gets upgraded 33.0% of the time, and tends to be picked up near floor 17.

Of the runs that drafted it, 180 ended in victory against 270 deaths and 2 abandons. Its most common run-ender is Knowledge Demon Boss, finishing 7.1% of the runs it shows up in. See the synergies, class split, and threats below for the full picture of where Big Bang fits a Regent deck.

Pick or Skip: Big Bang

Players take Big Bang in 64.4% of the 626 offers it appears in; those runs win 43.3% against 38.3% for runs that passed, a pick lift of +4.8% over 349 decided runs.

Taken 403 times out of 626 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 Big Bang

Of the 4 pickup windows recorded for Big Bang, Act 3 is the best: 71.0% across 32 runs.

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

Best Cards to Pair with Big Bang

Big Bang’s strongest card pairings so far are Heirloom Hammer (+27.5%), Sword Sage (+25.2%), and Void Form (+24.3%), each shown with the win-rate lift it adds.

Heirloom Hammer+27.5%30 runsSword Sage+25.2%59 runsVoid Form+24.3%76 runsDecisions, Decisions+24.1%54 runsProduction+22.9%25 runsMake It So+22.0%40 runs

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

Big Bang Win Rate by Class

Exclusive to the Regent, Big Bang posts a 40.6% win rate over 430 tracked runs.

The Regentappears in 13.1% of its runs (430 tracked)

Best Relics for Big Bang

The relics that swing Big Bang’s win rate the most are The Courier (+28.0%), Anchor (+27.6%), and Regalite (+26.7%), with each lift shown.

The Courier+28.0%16 runsAnchor+27.6%96 runsRegalite+26.7%18 runsMercury Hourglass+25.7%58 runsShuriken+25.6%23 runsWar Paint+25.5%108 runs

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

Big Bang Card Details

A 0-energy rare skill, Big Bang is upgraded 33.0% of the time and tends to enter the deck around floor 17.

Draw cards. Gain Energy. Gain Stars. Forge.

What Ends Runs with Big Bang

Runs holding Big Bang end most often against Knowledge Demon Boss (7.1%), Aeonglass Boss (4.2%), and Kaiser Crab Boss (4.2%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss7.1% of runs
• Aeonglass Boss4.2% of runs
• Kaiser Crab Boss4.2% of runs
• Test Subject Boss4.0% of runs
• The Insatiable Boss3.8% of runs

See Also

Keep exploring Slay the Spire 2 tier lists and stats below.