Feats

Boon of Fortune's Favor

Prerequisite
Level 19+
Ability Score Increase
+1 to any ability score (max 30)
Source
FRHoF

You gain the following benefits.

Saving Throw Reroll

When you fail a saving throw, you can reroll it and must use the new roll. Once you use this benefit, you can't do so again until the start of your next turn.