What does the Lantern Key do in Slay the Spire 2?

By Paul Kelly

Added Mar 10, 2026

You have to go through a tough battle to get a hold of the Lantern Key in Slay the Spire 2, but the eventual rewards are well worth it.

This article was curated from external sources. Originally reported by PCGAMESN, summarized by Gamers Unchained. All trademarks belong to their respective owners.

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What does the Lantern Key do in Slay the Spire 2?