Cards
Cinder
Burn is an unplayable status card that deals 2 damage at end of turn, then Exhausts. Enemies inflict it to chip away your HP without direct counterplay.
Numbers from the current game data
Status Card
End of turn: Applies 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