[Spells help] poison

Syntax: cast 'poison' 

Poison causes the victim to become sick and lose their vitality.  This
includes weakness, slow rates of healing, and occasional bouts of nausea.

The spell can be cast directly upon a victim.  This is a hostile casting
and will provoke an attack.  Poison can also be cast on certain items.
If cast on food or liquid the consumable will become poisoned for a long
period of time.  If cast on a weapon, the next hit with that weapon will
cause the victim to become poisoned.  This type of use fades quickly.

See also: 'cure poison' 'detect poison' plague