What It Does
The hand lights. A spark takes — a torch, a brazier, a wick, a fuse — and the fire is the one who is still standing. It is the cantrip of every school, and the one the camp teaches first, because the fire is the one you trust in the dark.
The Cost
Circle 1 · Fire · Exchange: gesture — casting time one beat. The Exchange is the gesture rung on the ladder in The Veil: the spell costs exactly as much as the spell is, and the meter pays the budget, not the cost.
The Failure
Vague intent makes a vague spark — it takes, and it takes the wrong thing, and the wrong thing is the coat.
In Stories
The camp's first spell, the one the new arrival casts before the camp has decided what the new arrival is.
The door's scale anchor is Ignathar, who casts it the way a hand casts a shadow — which is how a reader knows the shape of the thing, because the dragon does not think about it.