Fade Away (UA: Feats for Races)

Prerequisite: Gnome
You can draw on your magical heritage to escape danger. You gain the following benefits:
• Increase your Intelligence score by 1, up to a maximum of 20.
• When you take damage, you can use a reaction to magically become invisible until the end of your next turn or until you attack, deal damage, or force someone to make a saving throw. Once you use this ability, you can’t do so again until you finish a short or long rest.