So; The human fighter has a racial move “Once per battle you may reroll a single damage roll (yours or someone else’s).”; Assuming this is supposed to model the character just being ‘lucky’ or having a ‘little something extra’, how would you adjudicate this move in the fiction? Especially for incoming damage.
Do you announce the damage number and then ask the player if they want a re-roll before you narrate what happens?
Do you just kinda retcon your description?
What your approach?