Lantern KeyQuest
Unlocks a special event in the next Act.
Is Lantern Key good in Slay the Spire 2?
Lantern Key is a quest Quest quest in Slay the Spire 2. In combat it resolves as: Unlocks a special event in the next Act. It currently underperforms most alternatives, sitting at F tier in our Slay the Spire 2 card rankings.
Across 44 recorded runs, decks running it win 0.0% of the time, trailing the 18.9% average by 18.9%. It’s a more selective pick, turning up in just 1.2% of decks that could run it. Regent players keep it in 1.6% of their runs, so it’s a familiar sight in those decks. On average it shows up 1.1 times in the decks that take it.
It performs best next to Defend — together they post a 0.0% swing in win rate. It also has strong chemistry with the relic Silver Crucible, which moves its win rate by 0.0%. At - energy, it’s upgraded in 0.0% of runs and usually joins the deck around floor 23.
That’s 0 wins, 41 deaths, and 3 abandoned runs with it in the deck. The encounter that most often ends a run carrying it is Knowledge Demon Boss, which closes out 27.3% of its appearances. Read on for Lantern Key’s complete synergy, class, and threat breakdown to decide whether it earns a slot in your Quest run.
Lantern Key Win Rate & Pick Rate
Lantern Key’s 0.0% win rate trails the 18.9% all-deck average by 18.9%, the gap charted below.
Run Outcomes with Lantern Key
Lantern Key has 0 wins and 44 losses over 44 tracked runs (0.0% won); abandoned runs count as losses.
- Wins 0.0%
- Losses 100.0%
Best Cards to Pair with Lantern Key
Ranked by win-rate lift, Lantern Key performs best alongside Defend (0.0%), Falling Star (0.0%), and Venerate (0.0%).
Defend11 runs
Falling Star11 runs
Venerate11 runs
Ascender's Bane14 runs
Hidden Cache6 runs
Strike11 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Best Relics for Lantern Key
Lantern Key pairs best with the relics Silver Crucible (0.0%), Orichalcum (0.0%), and Lantern (0.0%), ranked by win-rate lift.
Silver Crucible3 runs
Orichalcum4 runs
Lantern7 runs
Anchor3 runs
Arcane Scroll3 runs
Divine Right10 runsBased on small co-occurring samples — treat these as early signals, not final verdicts.
Lantern Key Card Details
Lantern Key is a quest quest costing - energy; it’s upgraded in 0.0% of runs and usually picked up by floor 23.
Unlocks a special event in the next Act.
What Ends Runs with Lantern Key
Lantern Key’s most common run-enders are Knowledge Demon Boss (27.3%), Decimillipede Elite (13.6%), and Kaiser Crab Boss (11.4%).
- Knowledge Demon Boss27.3% of runs
- Decimillipede Elite13.6% of runs
- Kaiser Crab Boss11.4% of runs
- Entomancer Elite6.8% of runs
- Infested Prisms Elite4.5% of runs
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Lantern Key – Frequently Asked Questions
Is Lantern Key good in Slay the Spire 2?
Across 44 tracked runs, Lantern Key has a 0.0% win rate — +18.9% below the average deck. Win rate reflects how often runs that include the card end in victory.
What does Lantern Key do in Slay the Spire 2?
Lantern Key costs - energy. Unlocks a special event in the next Act.
What class is Lantern Key in Slay the Spire 2?
Lantern Key is a Quest Quest Quest.
Is Lantern Key worth upgrading in Slay the Spire 2?
Lantern Key can be upgraded at a rest site to improve its effect.
What is the best relic for Lantern Key?
In tracked runs, Lantern Key has performed best alongside Silver Crucible, which lifts its win rate by 0.0% over 3 runs together.
See Also
Compare Lantern Key with the rest of the best Slay the Spire 2 cards, relics, and classes below.