Poisonous Undead (3.5e Feat)
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Poisonous Undead [Necromantic]
Undead you create burst out clouds of poisonous gas when they are hit
Prerequisite: Able to create undead, Noxious Undead
Benefit: When you create an undead creature you may choose to add an amber gemstone worth at least 75 gp to the material components of the spell. If you do, when the undead creature is hit in combat, it releases a 5ft. radius cloud of inhaled poison (1d2 Str primary, 1d3 Str secondary). If a character successfully saves against the poison, they are immune to it for 24 hours (including any secondary saves they must make). An undead created in this way counts as two Hit Dice higher for the purposes of creating it and controlling it. You can only raise an undead creature's effective Hit Dice to one half your caster level through Necromantic feats.
Special: This feat may only be applied to an undead creature mostly composed of flesh.