Potion

Very Rare

When you drink this potion, you recover 8d4+8 hit points and
you gain a fiendish constitution for the next 1d4 hours.
During this time, you gain resistance to cold, fire, and poison
damage as well as damage from nonmagical weapons that
aren’t silvered. You also have advantage on saving throws
against spells and other magical effects. This potion is a deep
crimson and smells strongly of sulfur

Cost: 25000 gp