The materials required by item rarity can be found on Xanathar manual at the section for crafting items. The potions of healing should be the most “common” item to use the materials, and having proficiency with the tools should be enough to have the knowledge to make those potions...
Each entry contains the book’s name, its author, a short description, and an optional notation indicating its rarity, relative value, and number of pages. By Russ Morrissey. Fire of the Mind. Tired of villains simply described as "mad" or "insane"? This article introduces four new ...