Oil of impact was a very explosive magical substance.[1] The priest Cadderly Bonaduce was known to use this oil in his youth.[2] A typical vial of this oil had a base value of 5,000gp.[3]


Only some of the exotic ingredients were known that were needed in the process of brewing the Oil of Impact - for example hill giant fingernails and crushed oxen horn. An alchemical device was needed to blend all ingredients together - and a very careful hand to not cause the oil to blow up in the process of brewing.


The oil could be transported in glass vials. Cadderly designed crossbow darts to hold the oil. These darts were small and narrow and made of iron except for silver caps. The centers of the darts were hollowed out to leave room for tiny glass vials filled with the oil. In case those darts impacted on a hard surface (such as a wall, limb of a tree or even an orog's torso) the vial collapsed and the oil exploded.[2]


  1. R.A. Salvatore (February 2002). Canticle. (Wizards of the Coast), p. 179. ISBN 0-7869-1604-4.
  2. 2.0 2.1 R.A. Salvatore (February 2002). Canticle. (Wizards of the Coast), p. 191. ISBN 0-7869-1604-4.
  3. Gary Gygax (August, 1985). Unearthed Arcana (1st edition). (TSR, Inc.), p. 84. ISBN 0880380845.