Booming Conch Relic

Is Booming Conch good in Slay the Spire 2?

In Slay the Spire 2, Booming Conch is an ancient relic you can pick up on your climb. Its effect: At the start of Elite combats, draw additional cards. The data marks it as a weaker relic, settling at F tier — rarely a run-defining grab.

Over 510 tracked runs the win rate of decks holding it sits at 14.6%, almost exactly the overall average. It sees lighter play, carried in only 2.4% of runs. It does its best work in the hands of the Regent, who post a 26.2% win rate with it. Within Regent runs specifically, it’s carried 1.9% of the time.

Its standout card pairing is Prolong, which lifts the relic’s win rate by +38.8% when both are in play. It also works nicely with Crimson Mantle, good for a +35.4% win-rate change. It typically enters the deck near floor 1. As an ancient relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 73 ended in victory while 428 fell to a defeat. Its most common run-ender is Knowledge Demon Boss, finishing 4.5% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Booming Conch is worth grabbing.

Pick or Skip: Booming Conch

Across 509 offers Booming Conch has a 100.0% pick rate; the 509 runs that took it and 0 that left it are still below the sample floor, so no win rate is shown.

Taken 509 times out of 509 offers.

A win rate is only shown once that side clears the sample floor. Below it you get the run counts and nothing else — a 0% here would be a reporting artefact, not a result.

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 Booming Conch

The cards that gain the most from carrying Booming Conch are Prolong (+38.8%), Crimson Mantle (+35.4%), and Know Thy Place (+35.4%), each shown with its win-rate swing.

Prolong+38.8%15 runsCrimson Mantle+35.4%16 runsKnow Thy Place+35.4%20 runsCosmic Indifference+32.1%15 runsBlur+29.9%18 runsRefine Blade+29.2%16 runs

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

Booming Conch Win Rate by Class

Of the 5 classes that carry Booming Conch, it performs best with Regent (26.2%), Silent (14.6%), and Ironclad (14.2%).

The Regent26.2%61 runsThe Silent14.6%125 runsThe Ironclad14.2%129 runsThe Necrobinder10.0%102 runsThe Defect9.9%84 runs

Booming Conch Details

Carried in 2.4% of runs, Booming Conch is an ancient relic typically acquired near floor 1.

At the start of Elite combats, draw additional cards.

What Ends Runs with Booming Conch

Runs carrying Booming Conch end most often against Knowledge Demon Boss (4.5%), Decimillipede Elite (4.1%), and Phrog Parasite Elite (3.9%) — the share of its runs each accounts for is shown.

• Knowledge Demon Boss4.5% of runs
• Decimillipede Elite4.1% of runs
• Phrog Parasite Elite3.9% of runs
• Lagavulin Matriarch Boss3.7% of runs
• Test Subject Boss3.7% of runs

See Also

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