Boon of Fate

Boon of Fate
Feat
Prerequisite: Level 19

You gain the following benefits.
Improve Fate.
When you or another creature within 60 feet of you succeeds on or fails a D20 Test, you can roll 2d4 and apply the total rolled as a bonus or penalty to the d20 roll. Once you use this benefit, you can't use it again until you roll Initiative or finish a Short or Long Rest.

Source: Player's Handbook (2024) (XPHB), page 210