The Way of the Warrior

Wondrous item, very rare

This book contains combat exercises and conditioning, and its words are charged with magic. If you spend 48 hours over a period of 6 days or fewer studying the book’s contents and practicing its guidelines, your Strength or Dexterity score (your choice) increases by 2 to a maximum of 20, and you gain proficiency in martial weapons, shields, medium armor, and heavy armor. The book then loses its magic, but regains it in a century.