Boon of Fortune’s Favor
Prerequisites 19th
You gain the following benefits.
Ability Score Increase. Increase one ability score of your choice by 1, to a maximum of 30.
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.
Sources
Forgotten Realms: Heroes of Faerûn p. 43