Potion

Potion, common through legendary. The inks can be used to make a single tattoo that lets the tattooed creature cast one chosen spell, with Constitution as the spellcasting ability. After casting the spell through the tattoo, the creature cannot do so again until finishing a long rest.

Potion, very rare. For one minute after consuming this thick dark potion, you gain +3 to damage with unarmed attacks.

Potion, uncommon. A vial usually has two doses. One dose grants resistance to cold damage for 8 hours; two doses grant immunity to cold damage and vulnerability to fire damage for 8 hours. Extra doses require a DC 14 Constitution saving throw or cause a level of exhaustion.

Potion, uncommon. When baked into a biscuit and consumed by a beast, the beast size increases by one category for 10 minutes. While enlarged, it has advantage on Strength checks and saving throws and its weapon attacks deal 1d4 extra damage.