Beltyn's Burning Blood(Unapproachable East, p. 48)
Level: Nar Demonbinder 4, Sorcerer 5, Wizard 5,
Components: V, S, M,
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Target: One living creature
Duration: 1 round/level (D)
Saving Throw: Fortitude partial (see text)
Spell Resistance: Yes
You infuse a living creature's blood with a hot, corrosive mixture, dealing 1d8 points of acid damage and 1d8 points of fire damage per round. Each round, on its action, the subject may attempt a Fortitude save to negate that round's damage, but a successful save in one round does not necessarily prevent damage in future rounds. On any round in which the subject fails its Fortitude save, the pain limits it to a single move-equivalent action in that round.
Beltyn's burning blood does not affect creatures of the construct, elemental, ooze, plant, or undead types.
Material Component: A drop of blood and a pinch of saltpeter.