# Infernal Constitution > [!info] Feat Details > | | | > |---|---| > | **Source** | Xanathar's Guide to Everything | > | **Categories** | Buff, Warding, Species Feat | > | **Prerequisite** | Tiefling | --- ## Description 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, to a maximum of 20. - You have resistance to cold damage and poison damage. - You have advantage on saving throws against being poisoned.