Molten Egg
Win Rate
38.4%
Pick Rate
2.0%
Δ vs Avg
+24.6

Molten Egg Relic

Rare
Rarity
Rare
Methodology
Data Methodology

Whenever you add an Attack card to your Deck, Upgrade it.

Is Molten Egg good in Slay the Spire 2?

In Slay the Spire 2, Molten Egg is a rare relic you can pick up on your climb. Its effect: Whenever you add an Attack card to your Deck, Upgrade it. The data marks it as a weaker relic, settling at D tier — rarely a run-defining grab.

Over 412 tracked runs the win rate of decks holding it sits at 38.4%, 24.6% ahead of the 13.8% all-run baseline. It sees lighter play, carried in only 2.0% of runs. It does its best work in the hands of the Necrobinder, who post a 53.5% win rate with it. Within Necrobinder runs specifically, it’s carried 1.7% of the time.

Its standout card pairing is Lethality, which lifts the relic’s win rate by +44.9% when both are in play. It also works nicely with Crimson Mantle, good for a +41.6% win-rate change. It typically enters the deck near floor 17. As a rare relic, how often it’s offered depends on its rarity tier.

Of the runs that carried it, 156 ended in victory while 250 fell to a defeat. Its most common run-ender is Knowledge Demon Boss, finishing 5.3% of the runs it appears in. See the best cards, class split, and threats below for the full read on whether Molten Egg is worth grabbing.

Molten Egg Win Rate & Pick Rate

At a 38.4% win rate, Molten Egg runs 24.6% ahead of the 13.8% all-run baseline — the bars below put the two side by side.

Win rate38.4%
Average run13.8%
+24.6% vs averagePick rate: 2.0%412 runs

Run Outcomes with Molten Egg

Across the 412 runs that carried Molten Egg, 156 ended in a win and 256 in a loss — a 37.9% win share, counting abandons as losses.

  • Wins 37.9%
  • Losses 62.1%

Pick or Skip: Molten Egg

Players take Molten Egg in 60.9% of the 672 offers it appears in; those runs win 38.6% against 25.2% for runs that passed, a pick lift of +13.1% over 404 decided runs.

Pick rate when offered60.9%672 offers

Taken 409 times out of 672 offers.

Win rate when picked38.6%404 runs
Win rate when skipped25.2%254 runs
+13.4% vs skippingPick lift: +13.1%Sample OK

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 Molten Egg

The cards that gain the most from carrying Molten Egg are Lethality (+44.9%), Crimson Mantle (+41.6%), and Dirge (+41.6%), each shown with its win-rate swing.

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

Molten Egg Win Rate by Class

Of the 5 classes that carry Molten Egg, it performs best with Necrobinder (53.5%), Ironclad (50.4%), and Silent (39.0%).

Molten Egg Details

Carried in 2.0% of runs, Molten Egg is a rare relic typically acquired near floor 17.

Whenever you add an Attack card to your Deck, Upgrade it.

RarityRare
Typical pickup floor17
Pick rate2.0%
Runs tracked412

What Ends Runs with Molten Egg

Runs carrying Molten Egg end most often against Knowledge Demon Boss (5.3%), Kaiser Crab Boss (4.6%), and Aeonglass Boss (4.1%) — the share of its runs each accounts for is shown.

  • Knowledge Demon Boss5.3% of runs
  • Kaiser Crab Boss4.6% of runs
  • Aeonglass Boss4.1% of runs
  • The Insatiable Boss3.9% of runs
  • Test Subject Boss3.9% of runs
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Molten Egg – Frequently Asked Questions

Is Molten Egg good in Slay the Spire 2?

Across 412 tracked runs carrying it, Molten Egg wins 38.4% of the time — +24.6% above the average run. Win rate reflects how often runs with the relic end in victory.

What does Molten Egg do in Slay the Spire 2?

Whenever you add an Attack card to your Deck, Upgrade it.

How rare is Molten Egg in Slay the Spire 2?

Molten Egg is a Rare relic, picked up in 2.0% of tracked runs.

What is the best card to use with Molten Egg?

In tracked runs, Molten Egg has performed best alongside Lethality, which lifts its win rate by +44.9% over 19 runs together.

Which class is Molten Egg best in?

Molten Egg has its highest win rate with The Necrobinder (53.5%).

Should I take Molten Egg when it is offered?

Players take Molten Egg in 60.9% of its 672 recorded offers. Runs that picked it win 38.6% (404 decided runs) against 25.2% for runs that skipped it (254 decided runs) — a +13.4% difference, and a +13.1% pick lift once sample size is accounted for.

See Also

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