Sacrifice - Slay the Spire 2
Retain . If Osty is alive, he dies and you gain Block equal to double his Max HP.
Sacrifice
+UPGRADEDCost changes from 1 to 0
Related Mechanics
Necrobinder's Relics
Synergies & related cards
Retain . Summon 3. Osty heals 5 HP.
Retain synergy — enables precise hand management alongside Spur.
Summon 5. Whenever Osty loses HP, ALL enemies lose that much HP as well.
Shares the "hp-manipulation" mechanic with Necro Mastery — core engine synergy.
If Osty is alive, he deals 9 damage to ALL enemies and you gain 9 Block . Osty dies.
Defensive anchor — Bone Shards creates a safe window for setup and scaling.
Osty deals 10 damage. Deals additional damage equal to Osty's Max HP .
Shares the "hp-manipulation" mechanic with Protector — core engine synergy.