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UnleashOsty deals 6 damage.
Deals additional damage equal to Osty's current HP.Attack1
Unleash+Osty deals 9 damage.
Deals additional damage equal to Osty's current HP.Attack1
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Unleash

The Necrobinder

Unleash+Osty deals 9 damage.
Deals additional damage equal to Osty's current HP.

Obtained

starting deckThe Necrobinder

Mentioned in

Necrobinder guide: Osty, Summon, Souls and Doom in Slay the Spire 2Slay the Spire starting decks, HP and relics for every character