Flatten - Slay the Spire 2

Synergies & related cards

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  Banshee's Cry9Attack

  Deal 33 damage to ALL enemies. Costs less for each Ethereal card played this combat.

  Shares the "cost-manipulation" mechanic with Banshee's Cry — core engine synergy.

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  Necro Mastery2Power

  Summon 5. Whenever Osty loses HP, ALL enemies lose that much HP as well.

  Shares the "osty" mechanic with Necro Mastery — core engine synergy.

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  Sacrifice1Skill

  Retain . If Osty is alive, he dies and you gain Block equal to double his Max HP.

  Shares the "osty" mechanic with Sacrifice — core engine synergy.

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  Squeeze3Attack

  Osty deals 25 damage. Deals 5 additional damage for ALL your other Osty Attacks.

  Shares the "osty" mechanic with Squeeze — core engine synergy.