Ironhide (5e Feat)
From D&D Wiki
Prerequisites: Constitution 13
You have trained to shrug off blows that leave a normal warrior reeling. Upon taking this feat, you gain the following benefits:
- Your Constitution score increases by 1, to a maximum of 20.
- You become immune to diseases.
- When you take damage from any source, you may use your reaction to give yourself resistance to the source of the damage. Once you use this feature, you may not use it again until you finish a long rest.