# Boon of Skill *Source: Player's Handbook (2024) p. 211* **Prerequisite**: 19th You gain the following benefits. **Ability Score Increase.** Increase one ability score of your choice by 1, to a maximum of 30. **All-Around Adept.** You gain proficiency in all skills. **Expertise.** Choose one skill in which you lack [Expertise](/Rules/Source/variant-rules/expertise-xphb.md). You gain [Expertise](/Rules/Source/variant-rules/expertise-xphb.md) in that skill.