Mercury Hourglass•Relic

Is Mercury Hourglass good in Slay the Spire 2?

Mercury Hourglass is an uncommon relic in Slay the Spire 2. While carried, it does the following: At the start of your turn, deal damage to ALL enemies. It’s a reliable mid-tier relic, landing at C tier in our rankings.

Across 27 recorded runs, decks carrying it win 30.8% of the time, comfortably clear of the 12.6% average, by 18.1%. It’s a more situational relic, showing up in just 5.2% of runs. The class that gets the most out of it is the Regent, at a 33.3% win rate. Regent players hold onto it in 5.4% of their runs.

It combos especially well with Mad Science, worth a +69.2% win-rate swing together. Another strong card to run with it is Know Thy Place, worth +35.9% to its win rate. On average it’s acquired around floor 17 of a run. Its uncommon rarity shapes how frequently you’ll run into it.

It has 8 run wins against 18 losses in our tracked data. When runs carrying it end, the most frequent culprit is Vantom Boss, which closes out 11.1% of them. Read on for Mercury Hourglass’s complete card, class, and threat breakdown before you decide to pick it up.

Best Cards with Mercury Hourglass

Ranked by win-rate lift, the best cards to run with Mercury Hourglass are Mad Science (+69.2%), Know Thy Place (+35.9%), and Doubt (+35.9%).

Mad Science+69.2%3 runsKnow Thy Place+35.9%3 runsDoubt+35.9%3 runsDebt+35.9%3 runsFriendship+35.9%3 runsSolar Strike+35.9%3 runs

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

Mercury Hourglass Win Rate by Class

Mercury Hourglass shows up across 4 classes, led by Regent (33.3%), Ironclad (33.3%), and Silent (28.6%) by win rate.

The Regent33.3%9 runsThe Ironclad33.3%3 runsThe Silent28.6%8 runsThe Necrobinder28.6%7 runs

Mercury Hourglass Details

Mercury Hourglass is an uncommon relic carried in 5.2% of runs and usually picked up around floor 17.

At the start of your turn, deal damage to ALL enemies.

What Ends Runs with Mercury Hourglass

Mercury Hourglass’s most common run-enders are Vantom Boss (11.1%), Decimillipede Elite (7.4%), and Test Subject Boss (7.4%).

• Vantom Boss11.1% of runs
• Decimillipede Elite7.4% of runs
• Test Subject Boss7.4% of runs

See Also

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