Alethea's Book of the Elfwood

The druid Alethea had lived in the Elfwood for a more than century before being killed by a mysterious assalent. This book contains an elven lifetime of herbalism, alchemical, and other druidic lore.

Notes: If studied for 1 hour, this book allows the use of proficiency bonus on skill checks related to potions, herbalism, and nature until the next long rest. Additionally, it provides advantage on the next single roll using one of those skills. The book is written in druidic, and can only provide these benefits to a character who can read and understand it.