Oil of Tempering

Oil of Tempering is a potion that temporarily increases the defenses of a piece of armor.

Description
The bottle containing the oil looked like a squat perfume bottle made of tin, and contains two doses of the potion.

The oil can be applied to a suit of armor, which takes 1 hour. Once applied, the armor gains a +1 bonus to AC for 24 hours.

History
Pumat Sol created and sold a Potion of Tempering at his store, The Invulnerable Vagrant. He showed the potion to the Mighty Nein, who considered buying it but declined due to its cost.

Trivia

 * Matt rolled a die before determining how many applications the potion that Pumat was selling had, implying that it may come in larger quantities.
 * Oil of Tempering is similar to Oil of Sharpness, a potion that increases the effectiveness of a bladed weapon.