You have spent much time among disease, granting you the following benefits:

• Your Constitution increases by 1, to a maximum of 20.
• You gain immunity to disesase.
• You can expend a use of a healer's kit to cure a creature of a disease over the course of 1 minute. That creature has advantage on saving throws against that disease for the rest of its body's existence. Alternatively, you can expend a use of a healer's kit in this way to infect a nondiseased creature with a disease which a diseased creature has, unless the nondiseased creature is not of the same creature type or is immune to disease.
• You can expend a use of a healer's kit to extract a pure sample of a disease from a diseased creature into a vial.