Knights of Tezoth

You could also have an ally, or maybe you lost the battle but survived. It doesn't activate automatically.

The deeper into the woods... the less I understand. Can the ability be left unactivated? And if it is activated, do you already know who will die, or is it another "surprise"? If the opponent loses as a result of the duel, can they still be left alive? What happens if you lose yourself? I have a feeling these aren't the last questions about this perk...