Owlbear Leather Armor

Alter: This set of leather armor was made from the remains of a hrdy and ferocious owlbear. While wearing this armor, if you fail a Constitution saving throw against an effect from a hostile source, you can choose to succeed instead. Once this property of the armor has been used, it can't be used again until the next dawn.

Attunement: Yes
Rarity: Uncommon
Type: Leather
Cost: 290gp

Griffons Saddlebag, Vol II