The arcanist can unleash an arc of flame by expending 1 point from her arcane reservoir. This creates a 30-foot line of flame that deals 1d6 points of fire damage + the arcanist's Charisma modifier, plus an additional 1d6 points of fire damage for every 2 levels beyond 1st (to a maximum of 10d6 at 19th level) to each target in the line. Creatures in the area of effect may attempt a Reflex saving throw to halve the damage.