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 214 recorded runs, decks carrying it win 40.5% of the time, comfortably clear of the 18.9% average, by 21.6%. It’s a more situational relic, showing up in just 5.7% of runs. The class that gets the most out of it is the Regent, at a 47.5% win rate. Regent players hold onto it in 6.0% of their runs.

It combos especially well with Dark Shackles, worth a +59.5% win-rate swing together. Another strong card to run with it is Mayhem, worth +59.5% to its win rate. On average it’s acquired around floor 19 of a run. Its uncommon rarity shapes how frequently you’ll run into it.

It has 81 run wins against 119 losses in our tracked data. When runs carrying it end, the most frequent culprit is Test Subject Boss, which closes out 7.5% 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 Dark Shackles (+59.5%), Mayhem (+59.5%), and Eternal Armor (+59.5%).

Dark Shackles+59.5%4 runsMayhem+59.5%5 runsEternal Armor+59.5%3 runsSword Sage+59.5%5 runsMind Blast+59.5%3 runsSpoils of Battle+59.5%4 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 5 classes, led by Regent (47.5%), Ironclad (45.6%), and Silent (43.8%) by win rate.

The Regent47.5%41 runsThe Ironclad45.6%51 runsThe Silent43.8%52 runsThe Necrobinder31.3%34 runsThe Defect29.4%36 runs

Mercury Hourglass Details

Mercury Hourglass is an uncommon relic carried in 5.7% of runs and usually picked up around floor 19.

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 Test Subject Boss (7.5%), Kaiser Crab Boss (4.7%), and Knowledge Demon Boss (4.7%).

• Test Subject Boss7.5% of runs
• Kaiser Crab Boss4.7% of runs
• Knowledge Demon Boss4.7% of runs
• The Insatiable Boss4.2% of runs
• Queen Boss4.2% of runs

See Also

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