Cards
Ember
Ember is a status card enemies add to your deck. It costs 1 Energy but does nothing if played; left in hand, it deals 2 Burn, then Exhausts.
Numbers from the current game data
Status Card
End of turn: Gain 2 Burn.
Strategy & Tips
Tactical noteIf Cinder remains in hand, it turns into Burn at turn end; play around that delayed self-damage by exhausting, discarding, or ending the fight before it matters.
See also

Soul Strip: Waifu Card Battler
Check cards, relics, and enemies before your next run. Every number comes from game data, and the Steam demo is free.
Wishlist on Steam