Chemical X Relic

Is Chemical X good in Slay the Spire 2?

In Slay the Spire 2, Chemical X is a shop relic you can pick up on your climb. Its effect: The effects of your cost X cards are increased by. Performance-wise it’s a steady, unspectacular pick rated C tier overall.

Over 75 tracked runs the win rate of decks holding it sits at 55.4%, 41.5% ahead of the 13.9% all-run baseline. It sees lighter play, carried in only 0.7% of runs. It does its best work in the hands of the Ironclad, who post a 58.3% win rate with it. Within Ironclad runs specifically, it’s carried 0.9% of the time.

Its standout card pairing is Bloodletting, which lifts the relic’s win rate by +13.3% when both are in play. It also works nicely with Defend, good for a +1.1% win-rate change. It typically enters the deck near floor 28. As a shop relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 41 ended in victory while 33 fell to a defeat. Its most common run-ender is Test Subject Boss, finishing 6.7% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Chemical X is worth grabbing.

Pick or Skip: Chemical X

Players take Chemical X in 9.8% of the 767 offers it appears in; those runs win 55.4% against 30.1% for runs that passed, a pick lift of +22.3% over 74 decided runs.

Taken 75 times out of 767 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.

Best Cards with Chemical X

The cards that gain the most from carrying Chemical X are Bloodletting (+13.3%), Defend (+1.1%), and Strike (-0.9%), each shown with its win-rate swing.

Bloodletting+13.3%17 runsDefend+1.1%24 runsStrike-0.9%23 runsGreed-2.1%15 runsBash-3.0%22 runsAscender's Bane-11.0%37 runs

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

Chemical X Win Rate by Class

Of the 5 classes that carry Chemical X, it performs best with Ironclad (58.3%), Necrobinder (58.3%), and Regent (58.3%).

The Ironclad58.3%25 runsThe Necrobinder58.3%12 runsThe Regent58.3%12 runsThe Silent57.1%14 runsThe Defect36.4%11 runs

Chemical X Details

Carried in 0.7% of runs, Chemical X is a shop relic typically acquired near floor 28.

The effects of your cost X cards are increased by.

What Ends Runs with Chemical X

Runs carrying Chemical X end most often against Test Subject Boss (6.7%), Aeonglass Boss (5.3%), and The Insatiable Boss (4.0%) — the share of its runs each accounts for is shown.

• Test Subject Boss6.7% of runs
• Aeonglass Boss5.3% of runs
• The Insatiable Boss4.0% of runs
• Queen Boss2.7% of runs
• Kaiser Crab Boss2.7% of runs

See Also

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