Poison Weapon

Poison Weapon is a runic spell that appears in Ultima Underworld II.

Spell Description
This spell temporarily poisons whatever weapon it is cast upon, allowing the mage who wields it to weaken their foes with slow-acting venom, much like poison daggers found in Britannia and on Serpent Isle.

Trivia

 * A perpetually envenomed Sword of Poison Weapon may be found in Anodunos.