Poison Spell
( Drow of the Underdark, p. 51)[General]
You can mystically transfer a poison to the target of your spells
Prerequisite
Benefit
You can add a contact or injury poison as a material component to a melee touch spell you are casting. Doing this entails the same risk of poisoning yourself as applying poison to a weapon (DMG 296).
The target of the spell, in addition to being subject to the normal effects of the spell, is also exposed to the poison. (A melee touch spell must deal damage to deliver the effect of an injury poison.) The dose of poison used as the component is expended when you cast the spell, whether or not the spell or poison successfully affects the target.