The thirteenth card turns face up and names its mark: choose one enemy piece except a king. It is doomed: after 4 of their turns it dies, wherever it has run to. Only being captured first spares it the mark.
You draft The Death Arcana in Buff mode. Activated: you choose when to use it, and using it is your move for that turn.
As a attack card, it removes or detonates a piece directly.
“It does not mean change this time. It means exactly what it shows.”