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Flatten
Card Effect
Osty deals 12 damage.
This card costs 0 [energy:1] if Osty has attacked this turn.
UPGRADE+
ostydamage:+4
Base Damage12
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💡 How to Use
Flatten is a high-impact companion attack that rewards proper sequencing by becoming free once Osty has already acted. It is most effective in decks that utilize low-cost Osty attacks to enable a high-damage burst for zero energy.
⚡ Synergies
card
Fetch
Fetch is an ideal opener because it triggers Osty's attack state and draws a card, allowing you to find and play Flatten for zero energy in the same turn.
card
Poke
Poke provides a very cheap way to satisfy Flatten's cost-reduction requirement, enabling a 12-damage follow-up for no additional energy cost.
relic
Bone Flute
This relic grants Block whenever Osty attacks; since Flatten can be reduced to 0 cost, it effectively becomes a free defensive and offensive tool simultaneously.
card
Rattle
Rattle deals more damage based on the number of times Osty has already attacked this turn, making the 0-cost Flatten an essential combo piece to maximize Rattle's hit count.