I mean, you can add as you like, but the pieces are already right there. Here:
The Bonfire Reborn
(Fire-Conjuring Taglock)
The Taglock for this spell is the ashes left behind from a bonfire. A pinch of these are drawn from whatever pouch, and exhorted to remember. They are then flung away as quickly as possible towards a target, as the ashes transform back into the flames of that fire for a few moments.