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Flatten artwork
The NecrobinderAttack

Flatten

Energy
2
Rarity
Common
Pool
Necrobinder
Target
Any Enemy

Base card

Osty deals 12 damage.
This card costs 0 1 Energy if Osty has attacked this turn.

Upgraded

Osty deals 16 damage.
This card costs 0 1 Energy if Osty has attacked this turn.
Used inNecrobinder Osty attack chains ↗
Main branchLast updated 2026-11-02
Flatten (Necrobinder card)/images/cards/flatten.webpOsty deals 12 damage. This card costs 0 1 Energy if Osty has attacked this turn.

Decisions and interactions

Accelerant## Faster damage can flatten a small stackNecrobinder Osty attack chainsFlatten can become free after Osty has attacked that turn.
Sources

Last updated 2026-11-02.

  • Game reference data: main branch

Related references

The NecrobinderCharacter mechanics and starting kitNecrobinder Osty attack chainsStrategy using this card, relic or character

Strategies using this

All strategies ↗
Necrobinder Osty attack chains artwork
necrobinder

Necrobinder Osty attack chains

Grow Osty’s defensive reserve and chain his attacks before Rattle. Calcify improves his attacks, while the player’s Strength does not; choose summons, defense and da…

OstySummonMulti-hit
SPIRE HANDBOOK

An independent Slay the Spire 2 strategy reference.

Game artwork and game data © Mega Crit. Extracted reference data and images via Spire Codex.

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