SpurRetain.
Summon 3.
Osty heals 5 HP.

Skill

1

Spur+Retain.
Summon 5.
Osty heals 7 HP.

Skill

1

Retain: Retained cards are not discarded at the end of turn.

Spur

The Necrobinder

Spur+Retain.
Summon 5.
Osty heals 7 HP.

Obtained

card rewardsThe Necrobinder

Merchant price

StS2

Shop band: 71–79Gold

Mentioned in

Necrobinder guide: Osty, Summon, Souls and Doom in Slay the Spire 2