Kill them all!
Henzell says...
  1. L4 Poison spell. Poisons non-rPois creatures in LOS multiple times over several turns. Casting it multiple times in a row will increase the duration!
  2. Before 0.19, it would also poison the caster, ignoring rPois unless the caster was fully immune to poison, and damage decreased with distance from the caster.
  3. see {genericpseudonym [1]}

Information based on master branch and the great LearnDB.
© Dungeon Crawl Stone Soup, 2010.