Poison is a degen-style spell. Poison can be cured through the Cure spell, Arch Cure spell, Cure Potions, or Healing skill. Depending on your range from the target and your poisoning skill you can inflict greater levels of poison (To a maximum of deadly poison)

Formula: Magery + Poisoning - (If range is 3+ tiles, range to target * 10) At 200, 10% chance to deadly poison, otherwise greater. At 170-199.9 greater poison. At 130-169.9 lesser poison. All other situations normal poison.