Take it easy.
Henzell says...
  1. Damages poisoned (but not merely poisonous) creatures (excluding you) and turns meph/poison clouds into flame. L4 Fire/Alchemy.
  2. In 0.16 and earlier, was a L5 Fire/Tmut spell that damages all (excluding you) in LOS that leave poisonous corpses or are poisoned (+cures it). Turns poison/str.poison/degen potions and poisoned ammo/corpses (excluding your inventory) to flame clouds.
  3. As of 0.19, damage is (2*severity of monster's poisoning)d(12 + (spellpower*6/100)).

Information based on master branch and the great LearnDB.
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