Boon of Dimensional Travel

Source: D&D 5.2 SRD Player Characters

Epic Boon Feat (Prerequisite: Level 19+)

You gain the following benefits.

Ability Score Increase. Increase one ability score of your choice by 1, to a maximum of 30.

Blink Steps. Immediately after you take the Attack action or the Magic action, you can teleport up to 30 feet to an unoccupied space you can see.