Calling upon the power of your deity, you are able to summon a stationary poison gas from the ground. Moving within or through this gas will cause creatures such as humanoids and animals to become afflicted by your poison.
On success you do 3.5 poison damage for 3.5 rounds.
Abilities are associated with one or more classes and can be used by both players and NPCs, and most abilities has to be learned and sometimes require points to be invested into them. Rarely, you can find a special ability scroll with limited uses, and these can be used if you have not learned the ability, but with a limited number of uses on the scroll.