Data-gui-hud-item-item poison

Bottle of Poison

The Bottle of Poison allows the Thief or the Knight to dip arrows or the sword in poison. Does not work with the Fire Bow or the Flaming Sword. The Wizard thinks this kind of trickery is useless, he’s not fond of poisons… Or potions… 

It is one of the Secret Items that enhance the Abilities of the three characters. When found it will automatically be placed in the Inventory Menu.

A complete list of the Secret Items can be seen in Inventory Items.