DND 5th Edition

Source: Xanathar's Guide to Everything

Prerequisite: Tiefling

Fiendish blood runs strong in you, unlocking a resilience akin to that possessed by some fiends. You gain the following benefits:

• Increase your Constitution score by 1, up to a maximum of 20.

• You have resistance to cold damage and poison damage.

• You have advantage on saving throws against being poisoned.