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Relic
Mysterious Cocoon
謎めいた繭
Upon gaining ? XP, transform Training Strike into Impale.
⚠️ This card has been removed from the current version of Slay the Spire 2. Kept here for reference to older patches.
Basic Info
| Item | Detail |
|---|---|
| English Name | Mysterious Cocoon |
| Rarity | Rare |
| Character | Common |
| Acquisition | Rare reward (Elite / chests) |
| Overall Tier | B |
Rating
Mysterious Cocoon is a relic that transforms Training Strikes into Skewers (an upgraded card) through XP gain. Replacing Training Strikes with a powerful card lifts the deck's baseline damage. The transformation speed depends on XP pacing, but deck quality naturally improves from the mid-run onward. The appeal is turning early Strikes directly into combat power.
Per-Character Rating
| Character | Rating | Comment |
|---|---|---|
| Ironclad | B | Strikes get replaced by powerful cards, boosting base damage |
| Silent | B | Contributes to overall deck-quality improvement |
| Defect | B | Strike slots are naturally reinforced |
| Necrobinder | B | XP gain grows cards over time |
| Regent | B | A reliable deck-strengthening tool |
Synergies
| Card / Relic | Reason |
|---|---|
| Strike Dummy | Strikes turn into upgrades and still get a damage bonus |
| Neow's Talisman | Upgraded Strikes transform even further into stronger cards |